400539268 has 12 divisors (see below), whose sum is σ = 701171100. Its totient is φ = 200204672.

The previous prime is 400539221. The next prime is 400539277. The reversal of 400539268 is 862935004.

It can be written as a sum of positive squares in 2 ways, for example, as 47775744 + 352763524 = 6912^2 + 18782^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721 + ... + 28312.

It is an arithmetic number, because the mean of its divisors is an integer number (58430925).

Almost surely, 2^400539268 is an apocalyptic number.

It is an amenable number.

400539268 is a deficient number, since it is larger than the sum of its proper divisors (300631832).

400539268 is a wasteful number, since it uses less digits than its factorization.

400539268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32486 (or 32484 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 400539268 is about 20013.4771591545. The cubic root of 400539268 is about 737.1372644234.

The spelling of 400539268 in words is "four hundred million, five hundred thirty-nine thousand, two hundred sixty-eight".