404203013 has 2 divisors, whose sum is σ = 404203014. Its totient is φ = 404203012.

The previous prime is 404203001. The next prime is 404203049. The reversal of 404203013 is 310302404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382515364 + 21687649 = 19558^2 + 4657^2 .

It is a cyclic number.

It is not a de Polignac number, because 404203013 - 2¹² = 404198917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404202982 and 404203000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404206013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202101506 + 202101507.

It is an arithmetic number, because the mean of its divisors is an integer number (202101507).

Almost surely, 2^404203013 is an apocalyptic number.

It is an amenable number.

404203013 is a deficient number, since it is larger than the sum of its proper divisors (1).

404203013 is an equidigital number, since it uses as much as digits as its factorization.

404203013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 404203013 is about 20104.8007450957. The cubic root of 404203013 is about 739.3779853407.

Adding to 404203013 its reverse (310302404), we get a palindrome (714505417).

The spelling of 404203013 in words is "four hundred four million, two hundred three thousand, thirteen".