407491020 has 96 divisors (see below), whose sum is σ = 1342353600. Its totient is φ = 102269952.

The previous prime is 407491009. The next prime is 407491031. The reversal of 407491020 is 20194704.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (407491009) and next prime (407491031).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13015 + ... + 31374.

It is an arithmetic number, because the mean of its divisors is an integer number (13982850).

Almost surely, 2^407491020 is an apocalyptic number.

It is an amenable number.

407491020 is an abundant number, since it is smaller than the sum of its proper divisors (934862580).

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

407491020 is a wasteful number, since it uses less digits than its factorization.

407491020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44424 (or 44416 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 407491020 is about 20186.4068125063. The cubic root of 407491020 is about 741.3774077714.

The spelling of 407491020 in words is "four hundred seven million, four hundred ninety-one thousand, twenty".