7899457392 has 40 divisors (see below), whose sum is σ = 22674369680. Its totient is φ = 2633152320.

The previous prime is 7899457381. The next prime is 7899457393. The reversal of 7899457392 is 2937549987.

7899457392 is a `hidden beast` number, since 7 + 8 + 99 + 457 + 3 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7899457393) 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 7 ways as a sum of consecutive naturals, for example, 9142459 + ... + 9143322.

It is an arithmetic number, because the mean of its divisors is an integer number (566859242).

Almost surely, 2^7899457392 is an apocalyptic number.

7899457392 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7899457392 is an abundant number, since it is smaller than the sum of its proper divisors (14774912288).

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

7899457392 is a wasteful number, since it uses less digits than its factorization.

7899457392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18285798 (or 18285786 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The square root of 7899457392 is about 88878.8917122620. The cubic root of 7899457392 is about 1991.5861021322.

The spelling of 7899457392 in words is "seven billion, eight hundred ninety-nine million, four hundred fifty-seven thousand, three hundred ninety-two".