404415121 has 16 divisors (see below), whose sum is σ = 457228800. Its totient is φ = 354323200.

The previous prime is 404415113. The next prime is 404415127. The reversal of 404415121 is 121514404.

It is not a de Polignac number, because 404415121 - 2³ = 404415113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404415092 and 404415101.

It is not an unprimeable number, because it can be changed into a prime (404415127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280320 + ... + 281758.

It is an arithmetic number, because the mean of its divisors is an integer number (28576800).

Almost surely, 2^404415121 is an apocalyptic number.

It is an amenable number.

404415121 is a deficient number, since it is larger than the sum of its proper divisors (52813679).

404415121 is a wasteful number, since it uses less digits than its factorization.

404415121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 404415121 is about 20110.0751117444. The cubic root of 404415121 is about 739.5072937629.

Adding to 404415121 its reverse (121514404), we get a palindrome (525929525).

The spelling of 404415121 in words is "four hundred four million, four hundred fifteen thousand, one hundred twenty-one".