404413253 has 2 divisors, whose sum is σ = 404413254. Its totient is φ = 404413252.

The previous prime is 404413213. The next prime is 404413283. The reversal of 404413253 is 352314404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387381124 + 17032129 = 19682^2 + 4127^2 .

It is a cyclic number.

It is not a de Polignac number, because 404413253 - 2¹² = 404409157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404413213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202206626 + 202206627.

It is an arithmetic number, because the mean of its divisors is an integer number (202206627).

Almost surely, 2^404413253 is an apocalyptic number.

It is an amenable number.

404413253 is a deficient number, since it is larger than the sum of its proper divisors (1).

404413253 is an equidigital number, since it uses as much as digits as its factorization.

404413253 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 404413253 is about 20110.0286673093. The cubic root of 404413253 is about 739.5061551624.

Adding to 404413253 its reverse (352314404), we get a palindrome (756727657).

The spelling of 404413253 in words is "four hundred four million, four hundred thirteen thousand, two hundred fifty-three".