404243403 has 8 divisors (see below), whose sum is σ = 539486928. Its totient is φ = 269247744.

The previous prime is 404243369. The next prime is 404243431. The reversal of 404243403 is 304342404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404243403 - 2²² = 400049099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404243003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58126 + ... + 64707.

It is an arithmetic number, because the mean of its divisors is an integer number (67435866).

Almost surely, 2^404243403 is an apocalyptic number.

404243403 is a deficient number, since it is larger than the sum of its proper divisors (135243525).

404243403 is a wasteful number, since it uses less digits than its factorization.

404243403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123933.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 404243403 is about 20105.8052064572. The cubic root of 404243403 is about 739.4026119773.

Adding to 404243403 its reverse (304342404), we get a palindrome (708585807).

Subtracting from 404243403 its reverse (304342404), we obtain a palindrome (99900999).

The spelling of 404243403 in words is "four hundred four million, two hundred forty-three thousand, four hundred three".