99185287 has 2 divisors, whose sum is σ = 99185288. Its totient is φ = 99185286.

The previous prime is 99185243. The next prime is 99185297. The reversal of 99185287 is 78258199.

It is a strong prime.

It is an emirp because it is prime and its reverse (78258199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99185287 - 2¹⁵ = 99152519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99185287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99185297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49592643 + 49592644.

It is an arithmetic number, because the mean of its divisors is an integer number (49592644).

Almost surely, 2^99185287 is an apocalyptic number.

99185287 is a deficient number, since it is larger than the sum of its proper divisors (1).

99185287 is an equidigital number, since it uses as much as digits as its factorization.

99185287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The square root of 99185287 is about 9959.1810406278. The cubic root of 99185287 is about 462.8949236521.

The spelling of 99185287 in words is "ninety-nine million, one hundred eighty-five thousand, two hundred eighty-seven".