598979987 has 2 divisors, whose sum is σ = 598979988. Its totient is φ = 598979986.

The previous prime is 598979951. The next prime is 598979993. The reversal of 598979987 is 789979895.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 598979987 - 2¹⁸ = 598717843 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 598979987.

It is not a weakly prime, because it can be changed into another prime (598973987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299489993 + 299489994.

It is an arithmetic number, because the mean of its divisors is an integer number (299489994).

Almost surely, 2^598979987 is an apocalyptic number.

598979987 is a deficient number, since it is larger than the sum of its proper divisors (1).

598979987 is an equidigital number, since it uses as much as digits as its factorization.

598979987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102876480, while the sum is 71.

The square root of 598979987 is about 24474.0676431197. The cubic root of 598979987 is about 842.9544429347.

The spelling of 598979987 in words is "five hundred ninety-eight million, nine hundred seventy-nine thousand, nine hundred eighty-seven".