402599 has 4 divisors (see below), whose sum is σ = 404064. Its totient is φ = 401136.

The previous prime is 402593. The next prime is 402601. The reversal of 402599 is 995204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402599 - 2⁴ = 402583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182 + ... + 915.

It is an arithmetic number, because the mean of its divisors is an integer number (101016).

2⁴⁰²⁵⁹⁹ is an apocalyptic number.

402599 is a deficient number, since it is larger than the sum of its proper divisors (1465).

402599 is a wasteful number, since it uses less digits than its factorization.

402599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 402599 is about 634.5068951556. The cubic root of 402599 is about 73.8398655558.

It can be divided in two parts, 402 and 599, that added together give a palindrome (1001).

The spelling of 402599 in words is "four hundred two thousand, five hundred ninety-nine".