402454444 has 18 divisors (see below), whose sum is σ = 819282660. Its totient is φ = 172480392.

The previous prime is 402454441. The next prime is 402454457. The reversal of 402454444 is 444454204.

It is not an unprimeable number, because it can be changed into a prime (402454441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1026474 + ... + 1026865.

Almost surely, 2^402454444 is an apocalyptic number.

It is an amenable number.

402454444 is an abundant number, since it is smaller than the sum of its proper divisors (416828216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402454444 is a wasteful number, since it uses less digits than its factorization.

402454444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053357 (or 2053348 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 31.

The square root of 402454444 is about 20061.2672580772. The cubic root of 402454444 is about 738.3102692370.

The spelling of 402454444 in words is "four hundred two million, four hundred fifty-four thousand, four hundred forty-four".