99923449 has 2 divisors, whose sum is σ = 99923450. Its totient is φ = 99923448.

The previous prime is 99923419. The next prime is 99923459. The reversal of 99923449 is 94432999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81775849 + 18147600 = 9043^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 99923449 - 2⁷ = 99923321 is a prime.

It is not a weakly prime, because it can be changed into another prime (99923419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49961724 + 49961725.

It is an arithmetic number, because the mean of its divisors is an integer number (49961725).

Almost surely, 2^99923449 is an apocalyptic number.

It is an amenable number.

99923449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99923449 is an equidigital number, since it uses as much as digits as its factorization.

99923449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 49.

The square root of 99923449 is about 9996.1717172125. The cubic root of 99923449 is about 464.0404137040.

The spelling of 99923449 in words is "ninety-nine million, nine hundred twenty-three thousand, four hundred forty-nine".