402439364 has 12 divisors (see below), whose sum is σ = 713916924. Its totient is φ = 198463104.

The previous prime is 402439357. The next prime is 402439369. The reversal of 402439364 is 463934204.

It can be written as a sum of positive squares in 2 ways, for example, as 99400900 + 303038464 = 9970^2 + 17408^2 .

It is not an unprimeable number, because it can be changed into a prime (402439369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688817 + ... + 689400.

It is an arithmetic number, because the mean of its divisors is an integer number (59493077).

Almost surely, 2^402439364 is an apocalyptic number.

It is an amenable number.

402439364 is a deficient number, since it is larger than the sum of its proper divisors (311477560).

402439364 is a wasteful number, since it uses less digits than its factorization.

402439364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378294 (or 1378292 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 402439364 is about 20060.8914059171. The cubic root of 402439364 is about 738.3010476070.

The spelling of 402439364 in words is "four hundred two million, four hundred thirty-nine thousand, three hundred sixty-four".