99155969 has 4 divisors (see below), whose sum is σ = 108170160. Its totient is φ = 90141780.

The previous prime is 99155939. The next prime is 99155983. The reversal of 99155969 is 96955199.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99155969 is a prime.

It is a super-2 number, since 2×99155969² = 19663812376657922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99155969.

It is not an unprimeable number, because it can be changed into a prime (99155909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4507079 + ... + 4507100.

It is an arithmetic number, because the mean of its divisors is an integer number (27042540).

It is a Proth number, since it is equal to 1513 ⋅ 2¹⁶ + 1 and 1513 < 2¹⁶.

Almost surely, 2^99155969 is an apocalyptic number.

It is an amenable number.

99155969 is a deficient number, since it is larger than the sum of its proper divisors (9014191).

99155969 is a wasteful number, since it uses less digits than its factorization.

99155969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014190.

The product of its digits is 984150, while the sum is 53.

The square root of 99155969 is about 9957.7090236660. The cubic root of 99155969 is about 462.8493103992.

The spelling of 99155969 in words is "ninety-nine million, one hundred fifty-five thousand, nine hundred sixty-nine".