9921363970 has 16 divisors (see below), whose sum is σ = 20409663168. Its totient is φ = 3401610480.

The previous prime is 9921363943. The next prime is 9921364003. The reversal of 9921363970 is 793631299.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70866816 + ... + 70866955.

It is an arithmetic number, because the mean of its divisors is an integer number (1275603948).

Almost surely, 2^9921363970 is an apocalyptic number.

9921363970 is an abundant number, since it is smaller than the sum of its proper divisors (10488299198).

9921363970 is a wasteful number, since it uses less digits than its factorization.

9921363970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141733785.

The product of its (nonzero) digits is 551124, while the sum is 49.

The square root of 9921363970 is about 99606.0438427307. The cubic root of 9921363970 is about 2148.7726161969.

The spelling of 9921363970 in words is "nine billion, nine hundred twenty-one million, three hundred sixty-three thousand, nine hundred seventy".