404879 has 4 divisors (see below), whose sum is σ = 408576. Its totient is φ = 401184.

The previous prime is 404851. The next prime is 404941. The reversal of 404879 is 978404.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404879 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 (404819) 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 in 3 ways as a sum of consecutive naturals, for example, 1679 + ... + 1904.

It is an arithmetic number, because the mean of its divisors is an integer number (102144).

2⁴⁰⁴⁸⁷⁹ is an apocalyptic number.

404879 is a deficient number, since it is larger than the sum of its proper divisors (3697).

404879 is a wasteful number, since it uses less digits than its factorization.

404879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 404879 is about 636.3010293878. The cubic root of 404879 is about 73.9789933068.

The spelling of 404879 in words is "four hundred four thousand, eight hundred seventy-nine".