404513243 has 2 divisors, whose sum is σ = 404513244. Its totient is φ = 404513242.

The previous prime is 404513233. The next prime is 404513251. The reversal of 404513243 is 342315404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404513243 - 2²² = 400318939 is a prime.

It is not a weakly prime, because it can be changed into another prime (404513233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202256621 + 202256622.

It is an arithmetic number, because the mean of its divisors is an integer number (202256622).

Almost surely, 2^404513243 is an apocalyptic number.

404513243 is a deficient number, since it is larger than the sum of its proper divisors (1).

404513243 is an equidigital number, since it uses as much as digits as its factorization.

404513243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 404513243 is about 20112.5145866945. The cubic root of 404513243 is about 739.5670970551.

Adding to 404513243 its reverse (342315404), we get a palindrome (746828647).

The spelling of 404513243 in words is "four hundred four million, five hundred thirteen thousand, two hundred forty-three".