402859 has 2 divisors, whose sum is σ = 402860. Its totient is φ = 402858.

The previous prime is 402851. The next prime is 402863. The reversal of 402859 is 958204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402859 - 2³ = 402851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201429 + 201430.

It is an arithmetic number, because the mean of its divisors is an integer number (201430).

2⁴⁰²⁸⁵⁹ is an apocalyptic number.

402859 is a deficient number, since it is larger than the sum of its proper divisors (1).

402859 is an equidigital number, since it uses as much as digits as its factorization.

402859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 402859 is about 634.7117455980. The cubic root of 402859 is about 73.8557574928.

The spelling of 402859 in words is "four hundred two thousand, eight hundred fifty-nine".