400806846 has 32 divisors (see below), whose sum is σ = 971654400. Its totient is φ = 121456440.

The previous prime is 400806821. The next prime is 400806851. The reversal of 400806846 is 648608004.

It is a super-2 number, since 2×400806846² = 321292255600935432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400806846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336786 + ... + 337973.

It is an arithmetic number, because the mean of its divisors is an integer number (30364200).

Almost surely, 2^400806846 is an apocalyptic number.

400806846 is an abundant number, since it is smaller than the sum of its proper divisors (570847554).

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

400806846 is a wasteful number, since it uses less digits than its factorization.

400806846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674781 (or 674775 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 400806846 is about 20020.1609883637. The cubic root of 400806846 is about 737.3013746825.

The spelling of 400806846 in words is "four hundred million, eight hundred six thousand, eight hundred forty-six".