400253564 has 6 divisors (see below), whose sum is σ = 700443744. Its totient is φ = 200126780.

The previous prime is 400253549. The next prime is 400253591. The reversal of 400253564 is 465352004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50031692 + ... + 50031699.

It is an arithmetic number, because the mean of its divisors is an integer number (116740624).

Almost surely, 2^400253564 is an apocalyptic number.

It is an amenable number.

400253564 is a deficient number, since it is larger than the sum of its proper divisors (300190180).

400253564 is a wasteful number, since it uses less digits than its factorization.

400253564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100063395 (or 100063393 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 400253564 is about 20006.3380957136. The cubic root of 400253564 is about 736.9619564691.

The spelling of 400253564 in words is "four hundred million, two hundred fifty-three thousand, five hundred sixty-four".