402986507402 has 4 divisors (see below), whose sum is σ = 604479761106. Its totient is φ = 201493253700.

The previous prime is 402986507377. The next prime is 402986507447. The reversal of 402986507402 is 204705689204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 244756783441 + 158229723961 = 494729^2 + 397781^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100746626849 + ... + 100746626852.

Almost surely, 2^402986507402 is an apocalyptic number.

402986507402 is a deficient number, since it is larger than the sum of its proper divisors (201493253704).

402986507402 is a wasteful number, since it uses less digits than its factorization.

402986507402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201493253703.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 402986507402 in words is "four hundred two billion, nine hundred eighty-six million, five hundred seven thousand, four hundred two".