400823212 has 24 divisors (see below), whose sum is σ = 753795504. Its totient is φ = 185805312.

The previous prime is 400823201. The next prime is 400823219. The reversal of 400823212 is 212328004.

It is not an unprimeable number, because it can be changed into a prime (400823219) 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, 39433 + ... + 48544.

It is an arithmetic number, because the mean of its divisors is an integer number (31408146).

Almost surely, 2^400823212 is an apocalyptic number.

It is an amenable number.

400823212 is a deficient number, since it is larger than the sum of its proper divisors (352972292).

400823212 is a wasteful number, since it uses less digits than its factorization.

400823212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88065 (or 88063 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 400823212 is about 20020.5697221633. The cubic root of 400823212 is about 737.3114098655.

The spelling of 400823212 in words is "four hundred million, eight hundred twenty-three thousand, two hundred twelve".