2639913440 has 48 divisors (see below), whose sum is σ = 6285952512. Its totient is φ = 1047642624.

The previous prime is 2639913439. The next prime is 2639913443. The reversal of 2639913440 is 443199362.

2639913440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639913443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44639 + ... + 85278.

It is an arithmetic number, because the mean of its divisors is an integer number (130957344).

Almost surely, 2^2639913440 is an apocalyptic number.

2639913440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2639913440 is an abundant number, since it is smaller than the sum of its proper divisors (3646039072).

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

2639913440 is a wasteful number, since it uses less digits than its factorization.

2639913440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130059 (or 130051 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 2639913440 is about 51380.0879718982. The cubic root of 2639913440 is about 1382.0695406292.

The spelling of 2639913440 in words is "two billion, six hundred thirty-nine million, nine hundred thirteen thousand, four hundred forty".