402089244 has 24 divisors (see below), whose sum is σ = 952213248. Its totient is φ = 132029040.

The previous prime is 402089231. The next prime is 402089257. The reversal of 402089244 is 442980204.

It is an interprime number because it is at equal distance from previous prime (402089231) and next prime (402089257).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249252 + ... + 250859.

It is an arithmetic number, because the mean of its divisors is an integer number (39675552).

Almost surely, 2^402089244 is an apocalyptic number.

It is an amenable number.

402089244 is an abundant number, since it is smaller than the sum of its proper divisors (550124004).

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

402089244 is a wasteful number, since it uses less digits than its factorization.

402089244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500185 (or 500183 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 402089244 is about 20052.1630753393. The cubic root of 402089244 is about 738.0868795568.

The spelling of 402089244 in words is "four hundred two million, eighty-nine thousand, two hundred forty-four".