398967659 has 2 divisors, whose sum is σ = 398967660. Its totient is φ = 398967658.

The previous prime is 398967629. The next prime is 398967661. The reversal of 398967659 is 956769893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398967659 - 2¹⁶ = 398902123 is a prime.

Together with 398967661, 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 (398967629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199483829 + 199483830.

It is an arithmetic number, because the mean of its divisors is an integer number (199483830).

Almost surely, 2^398967659 is an apocalyptic number.

398967659 is a deficient number, since it is larger than the sum of its proper divisors (1).

398967659 is an equidigital number, since it uses as much as digits as its factorization.

398967659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22044960, while the sum is 62.

The square root of 398967659 is about 19974.1748014780. The cubic root of 398967659 is about 736.1718908492.

It can be divided in two parts, 39 and 8967659, that added together give a palindrome (8967698).

The spelling of 398967659 in words is "three hundred ninety-eight million, nine hundred sixty-seven thousand, six hundred fifty-nine".