89898979 has 2 divisors, whose sum is σ = 89898980. Its totient is φ = 89898978.

The previous prime is 89898953. The next prime is 89898983. The reversal of 89898979 is 97989898.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89898979 - 2⁵ = 89898947 is a prime.

It is not a weakly prime, because it can be changed into another prime (89898929) 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, 44949489 + 44949490.

It is an arithmetic number, because the mean of its divisors is an integer number (44949490).

Almost surely, 2^89898979 is an apocalyptic number.

89898979 is a deficient number, since it is larger than the sum of its proper divisors (1).

89898979 is an equidigital number, since it uses as much as digits as its factorization.

89898979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 67.

The square root of 89898979 is about 9481.5072114090. The cubic root of 89898979 is about 447.9727392931.

The spelling of 89898979 in words is "eighty-nine million, eight hundred ninety-eight thousand, nine hundred seventy-nine".