402365651 has 4 divisors (see below), whose sum is σ = 403400400. Its totient is φ = 401330904.

The previous prime is 402365617. The next prime is 402365659. The reversal of 402365651 is 156563204.

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

It is a cyclic number.

It is not a de Polignac number, because 402365651 - 2¹⁴ = 402349267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402365659) 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, 516791 + ... + 517568.

It is an arithmetic number, because the mean of its divisors is an integer number (100850100).

Almost surely, 2^402365651 is an apocalyptic number.

402365651 is a deficient number, since it is larger than the sum of its proper divisors (1034749).

402365651 is a wasteful number, since it uses less digits than its factorization.

402365651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034748.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 402365651 is about 20059.0540903603. The cubic root of 402365651 is about 738.2559677655.

The spelling of 402365651 in words is "four hundred two million, three hundred sixty-five thousand, six hundred fifty-one".