402229665 has 16 divisors (see below), whose sum is σ = 715075200. Its totient is φ = 214522416.

The previous prime is 402229649. The next prime is 402229691. The reversal of 402229665 is 566922204.

It is not a de Polignac number, because 402229665 - 2⁴ = 402229649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1489605 + ... + 1489874.

It is an arithmetic number, because the mean of its divisors is an integer number (44692200).

Almost surely, 2^402229665 is an apocalyptic number.

402229665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402229665 is a deficient number, since it is larger than the sum of its proper divisors (312845535).

402229665 is a wasteful number, since it uses less digits than its factorization.

402229665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979493 (or 2979487 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 402229665 is about 20055.6641625253. The cubic root of 402229665 is about 738.1727898670.

The spelling of 402229665 in words is "four hundred two million, two hundred twenty-nine thousand, six hundred sixty-five".