398669059 has 2 divisors, whose sum is σ = 398669060. Its totient is φ = 398669058.

The previous prime is 398669009. The next prime is 398669081. The reversal of 398669059 is 950966893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398669059 is a prime.

It is not a weakly prime, because it can be changed into another prime (398669009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199334529 + 199334530.

It is an arithmetic number, because the mean of its divisors is an integer number (199334530).

Almost surely, 2^398669059 is an apocalyptic number.

398669059 is a deficient number, since it is larger than the sum of its proper divisors (1).

398669059 is an equidigital number, since it uses as much as digits as its factorization.

398669059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 398669059 is about 19966.6987506698. The cubic root of 398669059 is about 735.9881869116.

The spelling of 398669059 in words is "three hundred ninety-eight million, six hundred sixty-nine thousand, fifty-nine".