99963659 has 2 divisors, whose sum is σ = 99963660. Its totient is φ = 99963658.

The previous prime is 99963637. The next prime is 99963673. The reversal of 99963659 is 95636999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99963659 - 2⁸ = 99963403 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99963629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49981829 + 49981830.

It is an arithmetic number, because the mean of its divisors is an integer number (49981830).

Almost surely, 2^99963659 is an apocalyptic number.

99963659 is a deficient number, since it is larger than the sum of its proper divisors (1).

99963659 is an equidigital number, since it uses as much as digits as its factorization.

99963659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3542940, while the sum is 56.

The square root of 99963659 is about 9998.1827848865. The cubic root of 99963659 is about 464.1026498889.

The spelling of 99963659 in words is "ninety-nine million, nine hundred sixty-three thousand, six hundred fifty-nine".