99399071 has 2 divisors, whose sum is σ = 99399072. Its totient is φ = 99399070.

The previous prime is 99399061. The next prime is 99399103. The reversal of 99399071 is 17099399.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99399071 - 2²⁶ = 32290207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99399061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49699535 + 49699536.

It is an arithmetic number, because the mean of its divisors is an integer number (49699536).

Almost surely, 2^99399071 is an apocalyptic number.

99399071 is a deficient number, since it is larger than the sum of its proper divisors (1).

99399071 is an equidigital number, since it uses as much as digits as its factorization.

99399071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 99399071 is about 9969.9082744025. The cubic root of 99399071 is about 463.2272596173.

The spelling of 99399071 in words is "ninety-nine million, three hundred ninety-nine thousand, seventy-one".