7929902500 has 135 divisors (see below), whose sum is σ = 18915716127. Its totient is φ = 2906592000.

The previous prime is 7929902483. The next prime is 7929902503. The reversal of 7929902500 is 52099297.

The square root of 7929902500 is 89050.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 5500595556 + 2429306944 = 74166^2 + 49288^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7929902503) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 57882432 + ... + 57882568.

Almost surely, 2^7929902500 is an apocalyptic number.

7929902500 is the 89050-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7929902500

7929902500 is an abundant number, since it is smaller than the sum of its proper divisors (10985813627).

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

7929902500 is a wasteful number, since it uses less digits than its factorization.

7929902500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The cubic root of 7929902500 is about 1994.1413968082.

The spelling of 7929902500 in words is "seven billion, nine hundred twenty-nine million, nine hundred two thousand, five hundred".