402079 has 4 divisors (see below), whose sum is σ = 412984. Its totient is φ = 391176.

The previous prime is 402071. The next prime is 402089. The reversal of 402079 is 970204.

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 402079 - 2³ = 402071 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 (402071) 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, 5397 + ... + 5470.

It is an arithmetic number, because the mean of its divisors is an integer number (103246).

2⁴⁰²⁰⁷⁹ is an apocalyptic number.

402079 is a deficient number, since it is larger than the sum of its proper divisors (10905).

402079 is a wasteful number, since it uses less digits than its factorization.

402079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10904.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 402079 is about 634.0969957349. The cubic root of 402079 is about 73.8080611441.

The spelling of 402079 in words is "four hundred two thousand, seventy-nine".