400052504 has 8 divisors (see below), whose sum is σ = 750098460. Its totient is φ = 200026248.

The previous prime is 400052503. The next prime is 400052519. The reversal of 400052504 is 405250004.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400052503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25003274 + ... + 25003289.

Almost surely, 2^400052504 is an apocalyptic number.

It is an amenable number.

400052504 is a deficient number, since it is larger than the sum of its proper divisors (350045956).

400052504 is a wasteful number, since it uses less digits than its factorization.

400052504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50006569 (or 50006565 counting only the distinct ones).

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

The square root of 400052504 is about 20001.3125569299. The cubic root of 400052504 is about 736.8385360493.

The spelling of 400052504 in words is "four hundred million, fifty-two thousand, five hundred four".