402255444 has 24 divisors (see below), whose sum is σ = 938935648. Its totient is φ = 134036640.

The previous prime is 402255443. The next prime is 402255461. The reversal of 402255444 is 444552204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402255443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 47199 + ... + 55065.

Almost surely, 2^402255444 is an apocalyptic number.

It is an amenable number.

402255444 is an abundant number, since it is smaller than the sum of its proper divisors (536680204).

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

402255444 is a wasteful number, since it uses less digits than its factorization.

402255444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12135 (or 12133 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 402255444 is about 20056.3068384985. The cubic root of 402255444 is about 738.1885594231.

The spelling of 402255444 in words is "four hundred two million, two hundred fifty-five thousand, four hundred forty-four".