4000456 has 8 divisors (see below), whose sum is σ = 7500870. Its totient is φ = 2000224.

The previous prime is 4000439. The next prime is 4000489. The reversal of 4000456 is 6540004.

It can be written as a sum of positive squares in only one way, i.e., 3740356 + 260100 = 1934^2 + 510^2 .

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

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250021 + ... + 250036.

Almost surely, 2^4000456 is an apocalyptic number.

It is an amenable number.

4000456 is a deficient number, since it is larger than the sum of its proper divisors (3500414).

4000456 is a wasteful number, since it uses less digits than its factorization.

4000456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500063 (or 500059 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4000456 is about 2000.1139967512. The cubic root of 4000456 is about 158.7461370916.

The spelling of 4000456 in words is "four million, four hundred fifty-six", and thus it is an aban number.