402699144 has 32 divisors (see below), whose sum is σ = 1007370720. Its totient is φ = 134150016.

The previous prime is 402699139. The next prime is 402699163. The reversal of 402699144 is 441996204.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43884 + ... + 52260.

It is an arithmetic number, because the mean of its divisors is an integer number (31480335).

Almost surely, 2^402699144 is an apocalyptic number.

It is an amenable number.

402699144 is an abundant number, since it is smaller than the sum of its proper divisors (604671576).

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

402699144 is a wasteful number, since it uses less digits than its factorization.

402699144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10389 (or 10385 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 402699144 is about 20067.3651484195. The cubic root of 402699144 is about 738.4598745088.

The spelling of 402699144 in words is "four hundred two million, six hundred ninety-nine thousand, one hundred forty-four".