402699657994 has 16 divisors (see below), whose sum is σ = 609289004808. Its totient is φ = 199607334912.

The previous prime is 402699657991. The next prime is 402699658013. The reversal of 402699657994 is 499756996204.

It can be written as a sum of positive squares in 4 ways, for example, as 352198332369 + 50501325625 = 593463^2 + 224725^2 .

It is not an unprimeable number, because it can be changed into a prime (402699657991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801687 + ... + 1203370.

Almost surely, 2^402699657994 is an apocalyptic number.

402699657994 is a deficient number, since it is larger than the sum of its proper divisors (206589346814).

402699657994 is a wasteful number, since it uses less digits than its factorization.

402699657994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005929.

The product of its (nonzero) digits is 264539520, while the sum is 70.

The spelling of 402699657994 in words is "four hundred two billion, six hundred ninety-nine million, six hundred fifty-seven thousand, nine hundred ninety-four".