9971938364 has 12 divisors (see below), whose sum is σ = 17506647984. Its totient is φ = 4970038944.

The previous prime is 9971938343. The next prime is 9971938381. The reversal of 9971938364 is 4638391799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3981152 + ... + 3983655.

It is an arithmetic number, because the mean of its divisors is an integer number (1458887332).

Almost surely, 2^9971938364 is an apocalyptic number.

It is an amenable number.

9971938364 is a deficient number, since it is larger than the sum of its proper divisors (7534709620).

9971938364 is a wasteful number, since it uses less digits than its factorization.

9971938364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7965124 (or 7965122 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 59.

The square root of 9971938364 is about 99859.5932497224. The cubic root of 9971938364 is about 2152.4175699955.

The spelling of 9971938364 in words is "nine billion, nine hundred seventy-one million, nine hundred thirty-eight thousand, three hundred sixty-four".