398967607 has 2 divisors, whose sum is σ = 398967608. Its totient is φ = 398967606.

The previous prime is 398967589. The next prime is 398967629. The reversal of 398967607 is 706769893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398967607 - 2²³ = 390578999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398965607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199483803 + 199483804.

It is an arithmetic number, because the mean of its divisors is an integer number (199483804).

Almost surely, 2^398967607 is an apocalyptic number.

398967607 is a deficient number, since it is larger than the sum of its proper divisors (1).

398967607 is an equidigital number, since it uses as much as digits as its factorization.

398967607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 398967607 is about 19974.1734997972. The cubic root of 398967607 is about 736.1718588659.

The spelling of 398967607 in words is "three hundred ninety-eight million, nine hundred sixty-seven thousand, six hundred seven".