404204407 has 4 divisors (see below), whose sum is σ = 418142520. Its totient is φ = 390266296.

The previous prime is 404204401. The next prime is 404204413. The reversal of 404204407 is 704402404.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (404204401) and next prime (404204413).

It is a cyclic number.

It is not a de Polignac number, because 404204407 - 2³ = 404204399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404204401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6969013 + ... + 6969070.

It is an arithmetic number, because the mean of its divisors is an integer number (104535630).

Almost surely, 2^404204407 is an apocalyptic number.

404204407 is a deficient number, since it is larger than the sum of its proper divisors (13938113).

404204407 is a wasteful number, since it uses less digits than its factorization.

404204407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938112.

The product of its (nonzero) digits is 3584, while the sum is 25.

The square root of 404204407 is about 20104.8354134024. The cubic root of 404204407 is about 739.3788353193.

The spelling of 404204407 in words is "four hundred four million, two hundred four thousand, four hundred seven".