4139408640 has 72 divisors (see below), whose sum is σ = 13220248608. Its totient is φ = 1103841280.

The previous prime is 4139408639. The next prime is 4139408657. The reversal of 4139408640 is 468049314.

It is a happy number.

4139408640 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535146 + ... + 542825.

It is an arithmetic number, because the mean of its divisors is an integer number (183614564).

Almost surely, 2^4139408640 is an apocalyptic number.

4139408640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4139408640 is an abundant number, since it is smaller than the sum of its proper divisors (9080839968).

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

4139408640 is a wasteful number, since it uses less digits than its factorization.

4139408640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077995 (or 1077981 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 4139408640 is about 64338.2362207731. The cubic root of 4139408640 is about 1605.6323165334.

The spelling of 4139408640 in words is "four billion, one hundred thirty-nine million, four hundred eight thousand, six hundred forty".