400803012 has 24 divisors (see below), whose sum is σ = 1039119200. Its totient is φ = 133600968.

The previous prime is 400802959. The next prime is 400803019. The reversal of 400803012 is 210308004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (400803019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1855462 + ... + 1855677.

Almost surely, 2^400803012 is an apocalyptic number.

It is an amenable number.

400803012 is an abundant number, since it is smaller than the sum of its proper divisors (638316188).

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

400803012 is a wasteful number, since it uses less digits than its factorization.

400803012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711152 (or 3711144 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 400803012 is about 20020.0652346590. The cubic root of 400803012 is about 737.2990237392.

The spelling of 400803012 in words is "four hundred million, eight hundred three thousand, twelve".