403879 has 4 divisors (see below), whose sum is σ = 461584. Its totient is φ = 346176.

The previous prime is 403877. The next prime is 403889. The reversal of 403879 is 978304.

It is a happy number.

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 403879 - 2¹ = 403877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 403879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403877) 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, 28842 + ... + 28855.

It is an arithmetic number, because the mean of its divisors is an integer number (115396).

2⁴⁰³⁸⁷⁹ is an apocalyptic number.

403879 is a deficient number, since it is larger than the sum of its proper divisors (57705).

403879 is an equidigital number, since it uses as much as digits as its factorization.

403879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57704.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 403879 is about 635.5147519924. The cubic root of 403879 is about 73.9180368373.

The spelling of 403879 in words is "four hundred three thousand, eight hundred seventy-nine".