402400884 has 12 divisors (see below), whose sum is σ = 938935424. Its totient is φ = 134133624.

The previous prime is 402400879. The next prime is 402400903. The reversal of 402400884 is 488004204.

It is a tau number, because it is divible by the number of its divisors (12).

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, 16766692 + ... + 16766715.

Almost surely, 2^402400884 is an apocalyptic number.

It is an amenable number.

402400884 is an abundant number, since it is smaller than the sum of its proper divisors (536534540).

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

402400884 is a wasteful number, since it uses less digits than its factorization.

402400884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33533414 (or 33533412 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 402400884 is about 20059.9323029765. The cubic root of 402400884 is about 738.2775155072.

The spelling of 402400884 in words is "four hundred two million, four hundred thousand, eight hundred eighty-four".