407998992 has 20 divisors (see below), whose sum is σ = 1053997520. Its totient is φ = 135999648.

The previous prime is 407998991. The next prime is 407998993. The reversal of 407998992 is 299899704.

It is an interprime number because it is at equal distance from previous prime (407998991) and next prime (407998993).

It is not an unprimeable number, because it can be changed into a prime (407998991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4249942 + ... + 4250037.

It is an arithmetic number, because the mean of its divisors is an integer number (52699876).

Almost surely, 2^407998992 is an apocalyptic number.

It is an amenable number.

407998992 is an abundant number, since it is smaller than the sum of its proper divisors (645998528).

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

407998992 is a wasteful number, since it uses less digits than its factorization.

407998992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499990 (or 8499984 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 57.

The square root of 407998992 is about 20198.9849249907. The cubic root of 407998992 is about 741.6853430525.

The spelling of 407998992 in words is "four hundred seven million, nine hundred ninety-eight thousand, nine hundred ninety-two".