396117427 has 2 divisors, whose sum is σ = 396117428. Its totient is φ = 396117426.

The previous prime is 396117361. The next prime is 396117451. The reversal of 396117427 is 724711693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396117427 - 2²³ = 387728819 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 396117427.

It is not a weakly prime, because it can be changed into another prime (396118427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198058713 + 198058714.

It is an arithmetic number, because the mean of its divisors is an integer number (198058714).

Almost surely, 2^396117427 is an apocalyptic number.

396117427 is a deficient number, since it is larger than the sum of its proper divisors (1).

396117427 is an equidigital number, since it uses as much as digits as its factorization.

396117427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 396117427 is about 19902.6989878257. The cubic root of 396117427 is about 734.4146245395.

The spelling of 396117427 in words is "three hundred ninety-six million, one hundred seventeen thousand, four hundred twenty-seven".