98999977 has 2 divisors, whose sum is σ = 98999978. Its totient is φ = 98999976.

The previous prime is 98999969. The next prime is 98999983. The reversal of 98999977 is 77999989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57320041 + 41679936 = 7571^2 + 6456^2 .

It is a cyclic number.

It is not a de Polignac number, because 98999977 - 2³ = 98999969 is a prime.

It is not a weakly prime, because it can be changed into another prime (98999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49499988 + 49499989.

It is an arithmetic number, because the mean of its divisors is an integer number (49499989).

Almost surely, 2^98999977 is an apocalyptic number.

It is an amenable number.

98999977 is a deficient number, since it is larger than the sum of its proper divisors (1).

98999977 is an equidigital number, since it uses as much as digits as its factorization.

98999977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23147208, while the sum is 67.

The square root of 98999977 is about 9949.8732152726. The cubic root of 98999977 is about 462.6064650935.

The spelling of 98999977 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred seventy-seven".