404400115 has 16 divisors (see below), whose sum is σ = 572497920. Its totient is φ = 268356960.

The previous prime is 404400089. The next prime is 404400119. The reversal of 404400115 is 511004404.

It is not a de Polignac number, because 404400115 - 2²¹ = 402302963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404400092 and 404400101.

It is not an unprimeable number, because it can be changed into a prime (404400119) 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, 185275 + ... + 187444.

It is an arithmetic number, because the mean of its divisors is an integer number (35781120).

Almost surely, 2^404400115 is an apocalyptic number.

404400115 is a deficient number, since it is larger than the sum of its proper divisors (168097805).

404400115 is a wasteful number, since it uses less digits than its factorization.

404400115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372762.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 404400115 is about 20109.7020117156. The cubic root of 404400115 is about 739.4981470692.

Adding to 404400115 its reverse (511004404), we get a palindrome (915404519).

The spelling of 404400115 in words is "four hundred four million, four hundred thousand, one hundred fifteen".