8129739504 has 40 divisors (see below), whose sum is σ = 21005954640. Its totient is φ = 2709380608.

The previous prime is 8129739503. The next prime is 8129739517. The reversal of 8129739504 is 4059379218.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8129739503) 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, 287404 + ... + 314420.

It is an arithmetic number, because the mean of its divisors is an integer number (525148866).

Almost surely, 2^8129739504 is an apocalyptic number.

It is an amenable number.

8129739504 is an abundant number, since it is smaller than the sum of its proper divisors (12876215136).

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

8129739504 is a wasteful number, since it uses less digits than its factorization.

8129739504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33297 (or 33291 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 8129739504 is about 90165.0680918059. The cubic root of 8129739504 is about 2010.7537006627.

The spelling of 8129739504 in words is "eight billion, one hundred twenty-nine million, seven hundred thirty-nine thousand, five hundred four".