9864390966 has 32 divisors (see below), whose sum is σ = 19859890176. Its totient is φ = 3266328000.

The previous prime is 9864390959. The next prime is 9864390979. The reversal of 9864390966 is 6690934689.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866451 + ... + 877761.

It is an arithmetic number, because the mean of its divisors is an integer number (620621568).

Almost surely, 2^9864390966 is an apocalyptic number.

9864390966 is an abundant number, since it is smaller than the sum of its proper divisors (9995499210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9864390966 is a wasteful number, since it uses less digits than its factorization.

9864390966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12268.

The product of its (nonzero) digits is 15116544, while the sum is 60.

The square root of 9864390966 is about 99319.6403839643. The cubic root of 9864390966 is about 2144.6516399516.

The spelling of 9864390966 in words is "nine billion, eight hundred sixty-four million, three hundred ninety thousand, nine hundred sixty-six".