99989311 has 2 divisors, whose sum is σ = 99989312. Its totient is φ = 99989310.

The previous prime is 99989269. The next prime is 99989317. The reversal of 99989311 is 11398999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99989311 - 2¹¹ = 99987263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99989317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994655 + 49994656.

It is an arithmetic number, because the mean of its divisors is an integer number (49994656).

Almost surely, 2^99989311 is an apocalyptic number.

99989311 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989311 is an equidigital number, since it uses as much as digits as its factorization.

99989311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 49.

The square root of 99989311 is about 9999.4655357174. The cubic root of 99989311 is about 464.1423447910.

The spelling of 99989311 in words is "ninety-nine million, nine hundred eighty-nine thousand, three hundred eleven".