402494558139 has 10 divisors (see below), whose sum is σ = 601257303020. Its totient is φ = 268329705372.

The previous prime is 402494558119. The next prime is 402494558233. The reversal of 402494558139 is 931855494204.

It is a happy number.

402494558139 is a `hidden beast` number, since 4 + 0 + 24 + 9 + 4 + 5 + 581 + 39 = 666.

It is not a de Polignac number, because 402494558139 - 2⁵ = 402494558107 is a prime.

It is a super-2 number, since 2×402494558139² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402494558119) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2484534229 + ... + 2484534390.

It is an arithmetic number, because the mean of its divisors is an integer number (60125730302).

Almost surely, 2^402494558139 is an apocalyptic number.

402494558139 is a deficient number, since it is larger than the sum of its proper divisors (198762744881).

402494558139 is an equidigital number, since it uses as much as digits as its factorization.

402494558139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969068631 (or 4969068622 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 402494558139 in words is "four hundred two billion, four hundred ninety-four million, five hundred fifty-eight thousand, one hundred thirty-nine".