99620911 has 4 divisors (see below), whose sum is σ = 107284072. Its totient is φ = 91957752.

The previous prime is 99620897. The next prime is 99620921. The reversal of 99620911 is 11902699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99620911 - 2²⁵ = 66066479 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 (99620921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3831561 + ... + 3831586.

It is an arithmetic number, because the mean of its divisors is an integer number (26821018).

Almost surely, 2^99620911 is an apocalyptic number.

99620911 is a deficient number, since it is larger than the sum of its proper divisors (7663161).

99620911 is a wasteful number, since it uses less digits than its factorization.

99620911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663160.

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

The square root of 99620911 is about 9981.0275523114. The cubic root of 99620911 is about 463.5716155559.

The spelling of 99620911 in words is "ninety-nine million, six hundred twenty thousand, nine hundred eleven".