404224313 has 2 divisors, whose sum is σ = 404224314. Its totient is φ = 404224312.

The previous prime is 404224309. The next prime is 404224343. The reversal of 404224313 is 313422404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329349904 + 74874409 = 18148^2 + 8653^2 .

It is a cyclic number.

It is not a de Polignac number, because 404224313 - 2² = 404224309 is a prime.

It is not a weakly prime, because it can be changed into another prime (404224343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202112156 + 202112157.

It is an arithmetic number, because the mean of its divisors is an integer number (202112157).

Almost surely, 2^404224313 is an apocalyptic number.

It is an amenable number.

404224313 is a deficient number, since it is larger than the sum of its proper divisors (1).

404224313 is an equidigital number, since it uses as much as digits as its factorization.

404224313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404224313 is about 20105.3304623426. The cubic root of 404224313 is about 739.3909726053.

Adding to 404224313 its reverse (313422404), we get a palindrome (717646717).

The spelling of 404224313 in words is "four hundred four million, two hundred twenty-four thousand, three hundred thirteen".