2639094942 has 48 divisors (see below), whose sum is σ = 5810199696. Its totient is φ = 798547200.

The previous prime is 2639094923. The next prime is 2639094947. The reversal of 2639094942 is 2494909362.

It is a super-2 number, since 2×2639094942² = 13929644225779966728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2639094891 and 2639094900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639094947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 576342 + ... + 580902.

It is an arithmetic number, because the mean of its divisors is an integer number (121045827).

Almost surely, 2^2639094942 is an apocalyptic number.

2639094942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2639094942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2905099848).

2639094942 is an abundant number, since it is smaller than the sum of its proper divisors (3171104754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2639094942 is a wasteful number, since it uses less digits than its factorization.

2639094942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385 (or 5374 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 2639094942 is about 51372.1222259700. The cubic root of 2639094942 is about 1381.9266902275.

The spelling of 2639094942 in words is "two billion, six hundred thirty-nine million, ninety-four thousand, nine hundred forty-two".