402435904 has 28 divisors (see below), whose sum is σ = 860015044. Its totient is φ = 185739264.

The previous prime is 402435889. The next prime is 402435919. The reversal of 402435904 is 409534204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402435889) and next prime (402435919).

It can be written as a sum of positive squares in 2 ways, for example, as 145154304 + 257281600 = 12048^2 + 16040^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241017 + ... + 242680.

It is an arithmetic number, because the mean of its divisors is an integer number (30714823).

Almost surely, 2^402435904 is an apocalyptic number.

It is an amenable number.

402435904 is an abundant number, since it is smaller than the sum of its proper divisors (457579140).

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

402435904 is a wasteful number, since it uses less digits than its factorization.

402435904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483722 (or 483712 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 402435904 is about 20060.8051682877. The cubic root of 402435904 is about 738.2989317364.

The spelling of 402435904 in words is "four hundred two million, four hundred thirty-five thousand, nine hundred four".