9932712638 has 16 divisors (see below), whose sum is σ = 15779927520. Its totient is φ = 4672901376.

The previous prime is 9932712623. The next prime is 9932712709. The reversal of 9932712638 is 8362172399.

It is a happy number.

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, 87170 + ... + 165722.

It is an arithmetic number, because the mean of its divisors is an integer number (986245470).

Almost surely, 2^9932712638 is an apocalyptic number.

9932712638 is a deficient number, since it is larger than the sum of its proper divisors (5847214882).

9932712638 is a wasteful number, since it uses less digits than its factorization.

9932712638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82291.

The product of its digits is 979776, while the sum is 50.

The square root of 9932712638 is about 99662.9953292595. The cubic root of 9932712638 is about 2149.5916035542.

The spelling of 9932712638 in words is "nine billion, nine hundred thirty-two million, seven hundred twelve thousand, six hundred thirty-eight".