404121895 has 4 divisors (see below), whose sum is σ = 484946280. Its totient is φ = 323297512.

The previous prime is 404121863. The next prime is 404121917. The reversal of 404121895 is 598121404.

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 404121895 - 2⁵ = 404121863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404121895.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40412185 + ... + 40412194.

It is an arithmetic number, because the mean of its divisors is an integer number (121236570).

Almost surely, 2^404121895 is an apocalyptic number.

404121895 is a deficient number, since it is larger than the sum of its proper divisors (80824385).

404121895 is an equidigital number, since it uses as much as digits as its factorization.

404121895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80824384.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 404121895 is about 20102.7832650108. The cubic root of 404121895 is about 739.3285210252.

The spelling of 404121895 in words is "four hundred four million, one hundred twenty-one thousand, eight hundred ninety-five".