9864994689 has 48 divisors (see below), whose sum is σ = 15659339904. Its totient is φ = 5934931200.

The previous prime is 9864994681. The next prime is 9864994691.

It is a happy number.

9864994689 is a `hidden beast` number, since 98 + 6 + 499 + 46 + 8 + 9 = 666.

9864994689 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9864994689 - 2³ = 9864994681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9864994681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14924019 + ... + 14924679.

It is an arithmetic number, because the mean of its divisors is an integer number (326236248).

Almost surely, 2^9864994689 is an apocalyptic number.

9864994689 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9864994689 is a deficient number, since it is larger than the sum of its proper divisors (5794345215).

9864994689 is a wasteful number, since it uses less digits than its factorization.

9864994689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558 (or 1555 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 72.

The square root of 9864994689 is about 99322.6796305859. The cubic root of 9864994689 is about 2144.6953915666.

The spelling of 9864994689 in words is "nine billion, eight hundred sixty-four million, nine hundred ninety-four thousand, six hundred eighty-nine".