99711797 has 4 divisors (see below), whose sum is σ = 102030720. Its totient is φ = 97392876.

The previous prime is 99711767. The next prime is 99711803. The reversal of 99711797 is 79711799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79711799 = 347 ⋅229717.

It is a cyclic number.

It is not a de Polignac number, because 99711797 - 2¹² = 99707701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99711737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159397 + ... + 1159482.

It is an arithmetic number, because the mean of its divisors is an integer number (25507680).

Almost surely, 2^99711797 is an apocalyptic number.

It is an amenable number.

99711797 is a deficient number, since it is larger than the sum of its proper divisors (2318923).

99711797 is a wasteful number, since it uses less digits than its factorization.

99711797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318922.

The product of its digits is 250047, while the sum is 50.

The square root of 99711797 is about 9985.5794523903. The cubic root of 99711797 is about 463.7125476931.

The spelling of 99711797 in words is "ninety-nine million, seven hundred eleven thousand, seven hundred ninety-seven".