99659723 has 2 divisors, whose sum is σ = 99659724. Its totient is φ = 99659722.

The previous prime is 99659711. The next prime is 99659737. The reversal of 99659723 is 32795699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99659723 - 2⁸ = 99659467 is a prime.

It is not a weakly prime, because it can be changed into another prime (99659773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49829861 + 49829862.

It is an arithmetic number, because the mean of its divisors is an integer number (49829862).

Almost surely, 2^99659723 is an apocalyptic number.

99659723 is a deficient number, since it is larger than the sum of its proper divisors (1).

99659723 is an equidigital number, since it uses as much as digits as its factorization.

99659723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 50.

The square root of 99659723 is about 9982.9716517678. The cubic root of 99659723 is about 463.6318097639.

The spelling of 99659723 in words is "ninety-nine million, six hundred fifty-nine thousand, seven hundred twenty-three".