400447474443 has 12 divisors (see below), whose sum is σ = 578596374720. Its totient is φ = 266885485296.

The previous prime is 400447474391. The next prime is 400447474451. The reversal of 400447474443 is 344474744004.

It is a happy number.

It is not a de Polignac number, because 400447474443 - 2⁹ = 400447473931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400447474543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6592896 + ... + 6653357.

It is an arithmetic number, because the mean of its divisors is an integer number (48216364560).

Almost surely, 2^400447474443 is an apocalyptic number.

400447474443 is a deficient number, since it is larger than the sum of its proper divisors (178148900277).

400447474443 is a wasteful number, since it uses less digits than its factorization.

400447474443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249618 (or 13249615 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 45.

The spelling of 400447474443 in words is "four hundred billion, four hundred forty-seven million, four hundred seventy-four thousand, four hundred forty-three".