400545448 has 16 divisors (see below), whose sum is σ = 776920500. Its totient is φ = 193366656.

The previous prime is 400545371. The next prime is 400545487. The reversal of 400545448 is 844545004.

It can be written as a sum of positive squares in 2 ways, for example, as 363359844 + 37185604 = 19062^2 + 6098^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863013 + ... + 863476.

Almost surely, 2^400545448 is an apocalyptic number.

It is an amenable number.

400545448 is a deficient number, since it is larger than the sum of its proper divisors (376375052).

400545448 is a wasteful number, since it uses less digits than its factorization.

400545448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726524 (or 1726520 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

The square root of 400545448 is about 20013.6315545180. The cubic root of 400545448 is about 737.1410555497.

The spelling of 400545448 in words is "four hundred million, five hundred forty-five thousand, four hundred forty-eight".