99928249 has 2 divisors, whose sum is σ = 99928250. Its totient is φ = 99928248.

The previous prime is 99928247. The next prime is 99928271. The reversal of 99928249 is 94282999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 28224 = 9995^2 + 168^2 .

It is a cyclic number.

It is not a de Polignac number, because 99928249 - 2¹ = 99928247 is a prime.

Together with 99928247, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 99928196 and 99928205.

It is not a weakly prime, because it can be changed into another prime (99928247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49964124 + 49964125.

It is an arithmetic number, because the mean of its divisors is an integer number (49964125).

Almost surely, 2^99928249 is an apocalyptic number.

It is an amenable number.

99928249 is a deficient number, since it is larger than the sum of its proper divisors (1).

99928249 is an equidigital number, since it uses as much as digits as its factorization.

99928249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 52.

The square root of 99928249 is about 9996.4118062433. The cubic root of 99928249 is about 464.0478439196.

The spelling of 99928249 in words is "ninety-nine million, nine hundred twenty-eight thousand, two hundred forty-nine".