402659 has 6 divisors (see below), whose sum is σ = 417060. Its totient is φ = 388740.

The previous prime is 402631. The next prime is 402691. The reversal of 402659 is 956204.

It is not a de Polignac number, because 402659 - 2⁸ = 402403 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (402359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752 + ... + 1170.

It is an arithmetic number, because the mean of its divisors is an integer number (69510).

2⁴⁰²⁶⁵⁹ is an apocalyptic number.

402659 is a deficient number, since it is larger than the sum of its proper divisors (14401).

402659 is an equidigital number, since it uses as much as digits as its factorization.

402659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 402659 is about 634.5541742042. The cubic root of 402659 is about 73.8435335330.

The spelling of 402659 in words is "four hundred two thousand, six hundred fifty-nine".