988198699 has 2 divisors, whose sum is σ = 988198700. Its totient is φ = 988198698.

The previous prime is 988198691. The next prime is 988198723. The reversal of 988198699 is 996891889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 988198699 - 2³ = 988198691 is a prime.

It is not a weakly prime, because it can be changed into another prime (988198691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494099349 + 494099350.

It is an arithmetic number, because the mean of its divisors is an integer number (494099350).

Almost surely, 2^988198699 is an apocalyptic number.

988198699 is a deficient number, since it is larger than the sum of its proper divisors (1).

988198699 is an equidigital number, since it uses as much as digits as its factorization.

988198699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20155392, while the sum is 67.

The square root of 988198699 is about 31435.6278607570. The cubic root of 988198699 is about 996.0506562167.

The spelling of 988198699 in words is "nine hundred eighty-eight million, one hundred ninety-eight thousand, six hundred ninety-nine".