980599999 has 2 divisors, whose sum is σ = 980600000. Its totient is φ = 980599998.

The previous prime is 980599979. The next prime is 980600017. The reversal of 980599999 is 999995089.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 980599999 - 2¹⁹ = 980075711 is a prime.

980599999 is a modest number, since divided by 99999 gives 9805 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980599909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490299999 + 490300000.

It is an arithmetic number, because the mean of its divisors is an integer number (490300000).

Almost surely, 2^980599999 is an apocalyptic number.

980599999 is a deficient number, since it is larger than the sum of its proper divisors (1).

980599999 is an equidigital number, since it uses as much as digits as its factorization.

980599999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21257640, while the sum is 67.

The square root of 980599999 is about 31314.5333511454. The cubic root of 980599999 is about 993.4910586018.

The spelling of 980599999 in words is "nine hundred eighty million, five hundred ninety-nine thousand, nine hundred ninety-nine".