402651279 has 12 divisors (see below), whose sum is σ = 597327016. Its totient is φ = 261178992.

The previous prime is 402651259. The next prime is 402651289. The reversal of 402651279 is 972156204.

It is not a de Polignac number, because 402651279 - 2¹⁵ = 402618511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402651259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 604249 + ... + 604914.

Almost surely, 2^402651279 is an apocalyptic number.

402651279 is a deficient number, since it is larger than the sum of its proper divisors (194675737).

402651279 is a wasteful number, since it uses less digits than its factorization.

402651279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209206 (or 1209203 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 402651279 is about 20066.1725049896. The cubic root of 402651279 is about 738.4306154594.

The spelling of 402651279 in words is "four hundred two million, six hundred fifty-one thousand, two hundred seventy-nine".