400151504 has 10 divisors (see below), whose sum is σ = 775293570. Its totient is φ = 200075744.

The previous prime is 400151501. The next prime is 400151509. The reversal of 400151504 is 405151004.

It can be written as a sum of positive squares in only one way, i.e., 374345104 + 25806400 = 19348^2 + 5080^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400151501) by changing a digit.

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 as a sum of consecutive naturals, namely, 12504719 + ... + 12504750.

It is an arithmetic number, because the mean of its divisors is an integer number (77529357).

Almost surely, 2^400151504 is an apocalyptic number.

It is an amenable number.

400151504 is a deficient number, since it is larger than the sum of its proper divisors (375142066).

400151504 is a wasteful number, since it uses less digits than its factorization.

400151504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25009477 (or 25009471 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 400151504 is about 20003.7872414201. The cubic root of 400151504 is about 736.8993122373.

The spelling of 400151504 in words is "four hundred million, one hundred fifty-one thousand, five hundred four".