4139492640 has 96 divisors (see below), whose sum is σ = 13069123200. Its totient is φ = 1101348864.

The previous prime is 4139492633. The next prime is 4139492659. The reversal of 4139492640 is 462949314.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×4139492640² = 34270798633228339200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4139492592 and 4139492601.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 205917 + ... + 225123.

It is an arithmetic number, because the mean of its divisors is an integer number (136136700).

Almost surely, 2^4139492640 is an apocalyptic number.

4139492640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4139492640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6534561600).

4139492640 is an abundant number, since it is smaller than the sum of its proper divisors (8929630560).

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

4139492640 is a wasteful number, since it uses less digits than its factorization.

4139492640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19674 (or 19666 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 4139492640 is about 64338.8890174520. The cubic root of 4139492640 is about 1605.6431773603.

The spelling of 4139492640 in words is "four billion, one hundred thirty-nine million, four hundred ninety-two thousand, six hundred forty".