402386668 has 12 divisors (see below), whose sum is σ = 745598952. Its totient is φ = 189358400.

The previous prime is 402386659. The next prime is 402386671. The reversal of 402386668 is 866683204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2958658 + ... + 2958793.

It is an arithmetic number, because the mean of its divisors is an integer number (62133246).

Almost surely, 2^402386668 is an apocalyptic number.

It is an amenable number.

402386668 is a deficient number, since it is larger than the sum of its proper divisors (343212284).

402386668 is a wasteful number, since it uses less digits than its factorization.

402386668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917472 (or 5917470 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 402386668 is about 20059.5779616621. The cubic root of 402386668 is about 738.2688214601.

The spelling of 402386668 in words is "four hundred two million, three hundred eighty-six thousand, six hundred sixty-eight".