407818940 has 12 divisors (see below), whose sum is σ = 856419816. Its totient is φ = 163127568.

The previous prime is 407818937. The next prime is 407818951. The reversal of 407818940 is 49818704.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10195454 + ... + 10195493.

It is an arithmetic number, because the mean of its divisors is an integer number (71368318).

Almost surely, 2^407818940 is an apocalyptic number.

It is an amenable number.

407818940 is an abundant number, since it is smaller than the sum of its proper divisors (448600876).

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

407818940 is a wasteful number, since it uses less digits than its factorization.

407818940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20390956 (or 20390954 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 407818940 is about 20194.5274765220. The cubic root of 407818940 is about 741.5762238463.

The spelling of 407818940 in words is "four hundred seven million, eight hundred eighteen thousand, nine hundred forty".