393425897 has 2 divisors, whose sum is σ = 393425898. Its totient is φ = 393425896.

The previous prime is 393425891. The next prime is 393425899. The reversal of 393425897 is 798524393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391406656 + 2019241 = 19784^2 + 1421^2 .

It is an emirp because it is prime and its reverse (798524393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 393425897 - 2¹⁰ = 393424873 is a prime.

Together with 393425899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (393425891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196712948 + 196712949.

It is an arithmetic number, because the mean of its divisors is an integer number (196712949).

Almost surely, 2^393425897 is an apocalyptic number.

It is an amenable number.

393425897 is a deficient number, since it is larger than the sum of its proper divisors (1).

393425897 is an equidigital number, since it uses as much as digits as its factorization.

393425897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The square root of 393425897 is about 19834.9665237933. The cubic root of 393425897 is about 732.7474479956.

The spelling of 393425897 in words is "three hundred ninety-three million, four hundred twenty-five thousand, eight hundred ninety-seven".