400360446 has 24 divisors (see below), whose sum is σ = 881670504. Its totient is φ = 131265360.

The previous prime is 400360417. The next prime is 400360447. The reversal of 400360446 is 644063004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400360447) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 181216 + ... + 183411.

It is an arithmetic number, because the mean of its divisors is an integer number (36736271).

Almost surely, 2^400360446 is an apocalyptic number.

400360446 is an abundant number, since it is smaller than the sum of its proper divisors (481310058).

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

400360446 is a wasteful number, since it uses less digits than its factorization.

400360446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364696 (or 364693 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 400360446 is about 20009.0091208935. The cubic root of 400360446 is about 737.0275490206.

The spelling of 400360446 in words is "four hundred million, three hundred sixty thousand, four hundred forty-six".