402559 has 2 divisors, whose sum is σ = 402560. Its totient is φ = 402558.

The previous prime is 402551. The next prime is 402581. The reversal of 402559 is 955204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402559 - 2³ = 402551 is a prime.

402559 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201279 + 201280.

It is an arithmetic number, because the mean of its divisors is an integer number (201280).

2⁴⁰²⁵⁵⁹ is an apocalyptic number.

402559 is a deficient number, since it is larger than the sum of its proper divisors (1).

402559 is an equidigital number, since it uses as much as digits as its factorization.

402559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 402559 is about 634.4753738326. The cubic root of 402559 is about 73.8374200352.

It can be divided in two parts, 402 and 559, that added together give a square (961 = 31²).

The spelling of 402559 in words is "four hundred two thousand, five hundred fifty-nine".