400845208 has 8 divisors (see below), whose sum is σ = 751584780. Its totient is φ = 200422600.

The previous prime is 400845167. The next prime is 400845209. The reversal of 400845208 is 802548004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 400845208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400845209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25052818 + ... + 25052833.

Almost surely, 2^400845208 is an apocalyptic number.

It is an amenable number.

400845208 is a deficient number, since it is larger than the sum of its proper divisors (350739572).

400845208 is a wasteful number, since it uses less digits than its factorization.

400845208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50105657 (or 50105653 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 400845208 is about 20021.1190496436. The cubic root of 400845208 is about 737.3248967799.

The spelling of 400845208 in words is "four hundred million, eight hundred forty-five thousand, two hundred eight".