400055024 has 40 divisors (see below), whose sum is σ = 797292720. Its totient is φ = 194375168.

The previous prime is 400055011. The next prime is 400055027. The reversal of 400055024 is 420550004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400054987 and 400055005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400055027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88532 + ... + 92940.

It is an arithmetic number, because the mean of its divisors is an integer number (19932318).

Almost surely, 2^400055024 is an apocalyptic number.

It is an amenable number.

400055024 is a deficient number, since it is larger than the sum of its proper divisors (397237696).

400055024 is a wasteful number, since it uses less digits than its factorization.

400055024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577 (or 4571 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 400055024 is about 20001.3755526964. The cubic root of 400055024 is about 736.8400832039.

The spelling of 400055024 in words is "four hundred million, fifty-five thousand, twenty-four".