404423901 has 48 divisors (see below), whose sum is σ = 713275200. Its totient is φ = 225693216.

The previous prime is 404423893. The next prime is 404423917. The reversal of 404423901 is 109324404.

It is not a de Polignac number, because 404423901 - 2³ = 404423893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404423951) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 53335 + ... + 60443.

It is an arithmetic number, because the mean of its divisors is an integer number (14859900).

Almost surely, 2^404423901 is an apocalyptic number.

It is an amenable number.

404423901 is a deficient number, since it is larger than the sum of its proper divisors (308851299).

404423901 is a wasteful number, since it uses less digits than its factorization.

404423901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175 (or 7162 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 404423901 is about 20110.2934090977. The cubic root of 404423901 is about 739.5126453820.

The spelling of 404423901 in words is "four hundred four million, four hundred twenty-three thousand, nine hundred one".