398929968810 has 64 divisors (see below), whose sum is σ = 1063870796160. Its totient is φ = 106375570560.

The previous prime is 398929968803. The next prime is 398929968817. The reversal of 398929968810 is 18869929893.

It is a happy number.

398929968810 is a `hidden beast` number, since 398 + 92 + 99 + 68 + 8 + 1 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (398929968803) and next prime (398929968817).

It is a super-2 number, since 2×398929968810² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398929968817) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7813465 + ... + 7864355.

It is an arithmetic number, because the mean of its divisors is an integer number (16622981190).

Almost surely, 2^398929968810 is an apocalyptic number.

398929968810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398929968810 is an abundant number, since it is smaller than the sum of its proper divisors (664940827350).

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

398929968810 is a wasteful number, since it uses less digits than its factorization.

398929968810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79940 (or 79934 counting only the distinct ones).

The product of its (nonzero) digits is 120932352, while the sum is 72.

The spelling of 398929968810 in words is "three hundred ninety-eight billion, nine hundred twenty-nine million, nine hundred sixty-eight thousand, eight hundred ten".