99111967 has 2 divisors, whose sum is σ = 99111968. Its totient is φ = 99111966.

The previous prime is 99111949. The next prime is 99111983. The reversal of 99111967 is 76911199.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99111967 - 2⁷ = 99111839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99111907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49555983 + 49555984.

It is an arithmetic number, because the mean of its divisors is an integer number (49555984).

Almost surely, 2^99111967 is an apocalyptic number.

99111967 is a deficient number, since it is larger than the sum of its proper divisors (1).

99111967 is an equidigital number, since it uses as much as digits as its factorization.

99111967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 43.

The square root of 99111967 is about 9955.4993345387. The cubic root of 99111967 is about 462.7808347478.

The spelling of 99111967 in words is "ninety-nine million, one hundred eleven thousand, nine hundred sixty-seven".