404091879 has 8 divisors (see below), whose sum is σ = 541044480. Its totient is φ = 268266936.

The previous prime is 404091871. The next prime is 404091881. The reversal of 404091879 is 978190404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404091879 - 2³ = 404091871 is a prime.

It is a super-3 number, since 3×404091879³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404091879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404091871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281077 + ... + 282510.

It is an arithmetic number, because the mean of its divisors is an integer number (67630560).

Almost surely, 2^404091879 is an apocalyptic number.

404091879 is a deficient number, since it is larger than the sum of its proper divisors (136952601).

404091879 is a wasteful number, since it uses less digits than its factorization.

404091879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563829.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 404091879 is about 20102.0366878583. The cubic root of 404091879 is about 739.3102161238.

The spelling of 404091879 in words is "four hundred four million, ninety-one thousand, eight hundred seventy-nine".