99987299 has 2 divisors, whose sum is σ = 99987300. Its totient is φ = 99987298.

The previous prime is 99987281. The next prime is 99987301. The reversal of 99987299 is 99278999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99987299 is a prime.

It is a super-2 number, since 2×99987299² = 19994919922630802, which contains 22 as substring.

Together with 99987301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99987269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49993649 + 49993650.

It is an arithmetic number, because the mean of its divisors is an integer number (49993650).

Almost surely, 2^99987299 is an apocalyptic number.

99987299 is a deficient number, since it is larger than the sum of its proper divisors (1).

99987299 is an equidigital number, since it uses as much as digits as its factorization.

99987299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6613488, while the sum is 62.

The square root of 99987299 is about 9999.3649298343. The cubic root of 99987299 is about 464.1392315893.

The spelling of 99987299 in words is "ninety-nine million, nine hundred eighty-seven thousand, two hundred ninety-nine".