402799406 has 16 divisors (see below), whose sum is σ = 610125264. Its totient is φ = 199433664.

The previous prime is 402799403. The next prime is 402799421. The reversal of 402799406 is 604997204.

It is a super-2 number, since 2×402799406² = 324494722947905672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402799403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93410 + ... + 97626.

It is an arithmetic number, because the mean of its divisors is an integer number (38132829).

Almost surely, 2^402799406 is an apocalyptic number.

402799406 is a deficient number, since it is larger than the sum of its proper divisors (207325858).

402799406 is a wasteful number, since it uses less digits than its factorization.

402799406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 402799406 is about 20069.8631285816. The cubic root of 402799406 is about 738.5211554272.

The spelling of 402799406 in words is "four hundred two million, seven hundred ninety-nine thousand, four hundred six".