402678983 has 16 divisors (see below), whose sum is σ = 488980800. Its totient is φ = 323713536.

The previous prime is 402678977. The next prime is 402679019. The reversal of 402678983 is 389876204.

It is a cyclic number.

It is not a de Polignac number, because 402678983 - 2⁴ = 402678967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402678943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29093 + ... + 40641.

It is an arithmetic number, because the mean of its divisors is an integer number (30561300).

Almost surely, 2^402678983 is an apocalyptic number.

402678983 is a deficient number, since it is larger than the sum of its proper divisors (86301817).

402678983 is a wasteful number, since it uses less digits than its factorization.

402678983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 402678983 is about 20066.8628091189. The cubic root of 402678983 is about 738.4475507197.

The spelling of 402678983 in words is "four hundred two million, six hundred seventy-eight thousand, nine hundred eighty-three".