402444556 has 12 divisors (see below), whose sum is σ = 704698792. Its totient is φ = 201102048.

The previous prime is 402444551. The next prime is 402444557. The reversal of 402444556 is 655444204.

It is not an unprimeable number, because it can be changed into a prime (402444551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22305 + ... + 36088.

Almost surely, 2^402444556 is an apocalyptic number.

It is an amenable number.

402444556 is a deficient number, since it is larger than the sum of its proper divisors (302254236).

402444556 is a wasteful number, since it uses less digits than its factorization.

402444556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60120 (or 60118 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The square root of 402444556 is about 20061.0208115141. The cubic root of 402444556 is about 738.3042226133.

The spelling of 402444556 in words is "four hundred two million, four hundred forty-four thousand, five hundred fifty-six".