400440700438 has 8 divisors (see below), whose sum is σ = 602158959720. Its totient is φ = 199721047200.

The previous prime is 400440700369. The next prime is 400440700453. The reversal of 400440700438 is 834007044004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249650508 + ... + 249652111.

It is an arithmetic number, because the mean of its divisors is an integer number (75269869965).

Almost surely, 2^400440700438 is an apocalyptic number.

400440700438 is a deficient number, since it is larger than the sum of its proper divisors (201718259282).

400440700438 is a wasteful number, since it uses less digits than its factorization.

400440700438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499303022.

The product of its (nonzero) digits is 43008, while the sum is 34.

The spelling of 400440700438 in words is "four hundred billion, four hundred forty million, seven hundred thousand, four hundred thirty-eight".