402089374779 has 16 divisors (see below), whose sum is σ = 537708181248. Its totient is φ = 267266227232.

The previous prime is 402089374741. The next prime is 402089374793. The reversal of 402089374779 is 977473980204.

It is a cyclic number.

It is not a de Polignac number, because 402089374779 - 2¹⁷ = 402089243707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402089374279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1260274 + ... + 1546760.

It is an arithmetic number, because the mean of its divisors is an integer number (33606761328).

Almost surely, 2^402089374779 is an apocalyptic number.

402089374779 is a deficient number, since it is larger than the sum of its proper divisors (135618806469).

402089374779 is a wasteful number, since it uses less digits than its factorization.

402089374779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287874.

The product of its (nonzero) digits is 21337344, while the sum is 60.

The spelling of 402089374779 in words is "four hundred two billion, eighty-nine million, three hundred seventy-four thousand, seven hundred seventy-nine".