404430013 has 6 divisors (see below), whose sum is σ = 437933274. Its totient is φ = 373319856.

The previous prime is 404430011. The next prime is 404430049. The reversal of 404430013 is 310034404.

It can be written as a sum of positive squares in 3 ways, for example, as 18818244 + 385611769 = 4338^2 + 19637^2 .

It is not a de Polignac number, because 404430013 - 2¹ = 404430011 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 (404430011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1196370 + ... + 1196707.

It is an arithmetic number, because the mean of its divisors is an integer number (72988879).

Almost surely, 2^404430013 is an apocalyptic number.

It is an amenable number.

404430013 is a deficient number, since it is larger than the sum of its proper divisors (33503261).

404430013 is a wasteful number, since it uses less digits than its factorization.

404430013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393103 (or 2393090 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 404430013 is about 20110.4453705034. The cubic root of 404430013 is about 739.5163707458.

Adding to 404430013 its reverse (310034404), we get a palindrome (714464417).

The spelling of 404430013 in words is "four hundred four million, four hundred thirty thousand, thirteen".