402823859 has 2 divisors, whose sum is σ = 402823860. Its totient is φ = 402823858.

The previous prime is 402823853. The next prime is 402823867. The reversal of 402823859 is 958328204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402823859 - 2⁴ = 402823843 is a prime.

It is a super-2 number, since 2×402823859² = 324534122759303762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402823853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201411929 + 201411930.

It is an arithmetic number, because the mean of its divisors is an integer number (201411930).

Almost surely, 2^402823859 is an apocalyptic number.

402823859 is a deficient number, since it is larger than the sum of its proper divisors (1).

402823859 is an equidigital number, since it uses as much as digits as its factorization.

402823859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 402823859 is about 20070.4723163158. The cubic root of 402823859 is about 738.5360997494.

The spelling of 402823859 in words is "four hundred two million, eight hundred twenty-three thousand, eight hundred fifty-nine".