393241253 has 2 divisors, whose sum is σ = 393241254. Its totient is φ = 393241252.

The previous prime is 393241241. The next prime is 393241307. The reversal of 393241253 is 352142393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 267060964 + 126180289 = 16342^2 + 11233^2 .

It is an emirp because it is prime and its reverse (352142393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 393241253 - 2⁴ = 393241237 is a prime.

It is a super-2 number, since 2×393241253² = 309277366122020018, which contains 22 as substring.

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 (393241753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196620626 + 196620627.

It is an arithmetic number, because the mean of its divisors is an integer number (196620627).

Almost surely, 2^393241253 is an apocalyptic number.

It is an amenable number.

393241253 is a deficient number, since it is larger than the sum of its proper divisors (1).

393241253 is an equidigital number, since it uses as much as digits as its factorization.

393241253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 393241253 is about 19830.3114700703. The cubic root of 393241253 is about 732.6327982039.

The spelling of 393241253 in words is "three hundred ninety-three million, two hundred forty-one thousand, two hundred fifty-three".