99858949 has 2 divisors, whose sum is σ = 99858950. Its totient is φ = 99858948.

The previous prime is 99858911. The next prime is 99858959. The reversal of 99858949 is 94985899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82901025 + 16957924 = 9105^2 + 4118^2 .

It is a cyclic number.

It is not a de Polignac number, because 99858949 - 2¹⁹ = 99334661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99858959) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49929474 + 49929475.

It is an arithmetic number, because the mean of its divisors is an integer number (49929475).

Almost surely, 2^99858949 is an apocalyptic number.

It is an amenable number.

99858949 is a deficient number, since it is larger than the sum of its proper divisors (1).

99858949 is an equidigital number, since it uses as much as digits as its factorization.

99858949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 61.

The square root of 99858949 is about 9992.9449613215. The cubic root of 99858949 is about 463.9405470917.

The spelling of 99858949 in words is "ninety-nine million, eight hundred fifty-eight thousand, nine hundred forty-nine".