402798990386 has 32 divisors (see below), whose sum is σ = 718904688768. Its totient is φ = 167364046080.

The previous prime is 402798990371. The next prime is 402798990401. The reversal of 402798990386 is 683099897204.

It is an interprime number because it is at equal distance from previous prime (402798990371) and next prime (402798990401).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19800920 + ... + 19821251.

It is an arithmetic number, because the mean of its divisors is an integer number (22465771524).

Almost surely, 2^402798990386 is an apocalyptic number.

402798990386 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

402798990386 is a deficient number, since it is larger than the sum of its proper divisors (316105698382).

402798990386 is a wasteful number, since it uses less digits than its factorization.

402798990386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39622226.

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 402798990386 in words is "four hundred two billion, seven hundred ninety-eight million, nine hundred ninety thousand, three hundred eighty-six".