400447374 has 16 divisors (see below), whose sum is σ = 822541008. Its totient is φ = 129874752.

The previous prime is 400447351. The next prime is 400447381. The reversal of 400447374 is 473744004.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 901687 + ... + 902130.

It is an arithmetic number, because the mean of its divisors is an integer number (51408813).

Almost surely, 2^400447374 is an apocalyptic number.

400447374 is an abundant number, since it is smaller than the sum of its proper divisors (422093634).

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

400447374 is a wasteful number, since it uses less digits than its factorization.

400447374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803859.

The product of its (nonzero) digits is 37632, while the sum is 33.

The square root of 400447374 is about 20011.1812245055. The cubic root of 400447374 is about 737.0808873686.

The spelling of 400447374 in words is "four hundred million, four hundred forty-seven thousand, three hundred seventy-four".