99913967 has 2 divisors, whose sum is σ = 99913968. Its totient is φ = 99913966.

The previous prime is 99913943. The next prime is 99913987. The reversal of 99913967 is 76931999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99913967 - 2¹² = 99909871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99913937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49956983 + 49956984.

It is an arithmetic number, because the mean of its divisors is an integer number (49956984).

Almost surely, 2^99913967 is an apocalyptic number.

99913967 is a deficient number, since it is larger than the sum of its proper divisors (1).

99913967 is an equidigital number, since it uses as much as digits as its factorization.

99913967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 826686, while the sum is 53.

The square root of 99913967 is about 9995.6974243922. The cubic root of 99913967 is about 464.0257352328.

The spelling of 99913967 in words is "ninety-nine million, nine hundred thirteen thousand, nine hundred sixty-seven".