404121404 has 12 divisors (see below), whose sum is σ = 707385504. Its totient is φ = 202011264.

The previous prime is 404121397. The next prime is 404121407.

It is a happy number.

404121404 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404121407) 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, 10892 + ... + 30444.

It is an arithmetic number, because the mean of its divisors is an integer number (58948792).

Almost surely, 2^404121404 is an apocalyptic number.

It is an amenable number.

404121404 is a deficient number, since it is larger than the sum of its proper divisors (303264100).

404121404 is a wasteful number, since it uses less digits than its factorization.

404121404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24724 (or 24722 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 404121404 is about 20102.7710527678. The cubic root of 404121404 is about 739.3282216020.

The spelling of 404121404 in words is "four hundred four million, one hundred twenty-one thousand, four hundred four".