9933868990 has 32 divisors (see below), whose sum is σ = 19004843520. Its totient is φ = 3727858464.

The previous prime is 9933868963. The next prime is 9933868993. The reversal of 9933868990 is 998683399.

It is a super-2 number, since 2×9933868990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9933868993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234234 + ... + 273373.

It is an arithmetic number, because the mean of its divisors is an integer number (593901360).

Almost surely, 2^9933868990 is an apocalyptic number.

9933868990 is a deficient number, since it is larger than the sum of its proper divisors (9070974530).

9933868990 is a wasteful number, since it uses less digits than its factorization.

9933868990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507736.

The product of its (nonzero) digits is 22674816, while the sum is 64.

The square root of 9933868990 is about 99668.7964711123. The cubic root of 9933868990 is about 2149.6750177629.

The spelling of 9933868990 in words is "nine billion, nine hundred thirty-three million, eight hundred sixty-eight thousand, nine hundred ninety".