396423617 has 2 divisors, whose sum is σ = 396423618. Its totient is φ = 396423616.

The previous prime is 396423613. The next prime is 396423631. The reversal of 396423617 is 716324693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350400961 + 46022656 = 18719^2 + 6784^2 .

It is a cyclic number.

It is not a de Polignac number, because 396423617 - 2² = 396423613 is a prime.

It is not a weakly prime, because it can be changed into another prime (396423613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198211808 + 198211809.

It is an arithmetic number, because the mean of its divisors is an integer number (198211809).

Almost surely, 2^396423617 is an apocalyptic number.

It is an amenable number.

396423617 is a deficient number, since it is larger than the sum of its proper divisors (1).

396423617 is an equidigital number, since it uses as much as digits as its factorization.

396423617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 41.

The square root of 396423617 is about 19910.3896747402. The cubic root of 396423617 is about 734.6038045515.

The spelling of 396423617 in words is "three hundred ninety-six million, four hundred twenty-three thousand, six hundred seventeen".