99491311 has 2 divisors, whose sum is σ = 99491312. Its totient is φ = 99491310.

The previous prime is 99491309. The next prime is 99491317. The reversal of 99491311 is 11319499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99491311 - 2¹ = 99491309 is a prime.

Together with 99491309, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_5733793 and since 99491311 and 5733793 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99491317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49745655 + 49745656.

It is an arithmetic number, because the mean of its divisors is an integer number (49745656).

Almost surely, 2^99491311 is an apocalyptic number.

99491311 is a deficient number, since it is larger than the sum of its proper divisors (1).

99491311 is an equidigital number, since it uses as much as digits as its factorization.

99491311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 37.

The square root of 99491311 is about 9974.5331219060. The cubic root of 99491311 is about 463.3705033180.

The spelling of 99491311 in words is "ninety-nine million, four hundred ninety-one thousand, three hundred eleven".