402904422 has 16 divisors (see below), whose sum is σ = 895343280. Its totient is φ = 134301456.

The previous prime is 402904421. The next prime is 402904423. The reversal of 402904422 is 224409204.

It is an interprime number because it is at equal distance from previous prime (402904421) and next prime (402904423).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402904421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3730543 + ... + 3730650.

It is an arithmetic number, because the mean of its divisors is an integer number (55958955).

Almost surely, 2^402904422 is an apocalyptic number.

402904422 is an abundant number, since it is smaller than the sum of its proper divisors (492438858).

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

402904422 is a wasteful number, since it uses less digits than its factorization.

402904422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461204 (or 7461198 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 402904422 is about 20072.4792190701. The cubic root of 402904422 is about 738.5853311248.

The spelling of 402904422 in words is "four hundred two million, nine hundred four thousand, four hundred twenty-two".