396789317 has 2 divisors, whose sum is σ = 396789318. Its totient is φ = 396789316.

The previous prime is 396789311. The next prime is 396789319. The reversal of 396789317 is 713987693.

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., 395771236 + 1018081 = 19894^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 396789317 - 2⁴ = 396789301 is a prime.

Together with 396789319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396789311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198394658 + 198394659.

It is an arithmetic number, because the mean of its divisors is an integer number (198394659).

Almost surely, 2^396789317 is an apocalyptic number.

It is an amenable number.

396789317 is a deficient number, since it is larger than the sum of its proper divisors (1).

396789317 is an equidigital number, since it uses as much as digits as its factorization.

396789317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The square root of 396789317 is about 19919.5712052243. The cubic root of 396789317 is about 734.8296253100.

The spelling of 396789317 in words is "three hundred ninety-six million, seven hundred eighty-nine thousand, three hundred seventeen".