9990970652 has 24 divisors (see below), whose sum is σ = 19936735056. Its totient is φ = 4339968768.

The previous prime is 9990970643. The next prime is 9990970663. The reversal of 9990970652 is 2560790999.

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, 5650118 + ... + 5651885.

It is an arithmetic number, because the mean of its divisors is an integer number (830697294).

Almost surely, 2^9990970652 is an apocalyptic number.

It is an amenable number.

9990970652 is a deficient number, since it is larger than the sum of its proper divisors (9945764404).

9990970652 is a wasteful number, since it uses less digits than its factorization.

9990970652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11302037 (or 11302035 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 56.

The square root of 9990970652 is about 99954.8430642558. The cubic root of 9990970652 is about 2153.7860567495.

The spelling of 9990970652 in words is "nine billion, nine hundred ninety million, nine hundred seventy thousand, six hundred fifty-two".