400418044 has 12 divisors (see below), whose sum is σ = 754634104. Its totient is φ = 184808304.

The previous prime is 400418023. The next prime is 400418047. The reversal of 400418044 is 440814004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400418047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3850122 + ... + 3850225.

Almost surely, 2^400418044 is an apocalyptic number.

It is an amenable number.

400418044 is a deficient number, since it is larger than the sum of its proper divisors (354216060).

400418044 is a wasteful number, since it uses less digits than its factorization.

400418044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700364 (or 7700362 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 400418044 is about 20010.4483707887. The cubic root of 400418044 is about 737.0628915706.

The spelling of 400418044 in words is "four hundred million, four hundred eighteen thousand, forty-four".