99155199 has 16 divisors (see below), whose sum is σ = 155320704. Its totient is φ = 55471200.

The previous prime is 99155171. The next prime is 99155249.

It is a happy number.

99155199 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99155199 - 2⁷ = 99155071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99155159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115137 + ... + 115994.

It is an arithmetic number, because the mean of its divisors is an integer number (9707544).

Almost surely, 2^99155199 is an apocalyptic number.

99155199 is a deficient number, since it is larger than the sum of its proper divisors (56165505).

99155199 is a wasteful number, since it uses less digits than its factorization.

99155199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231158.

The product of its digits is 164025, while the sum is 48.

The square root of 99155199 is about 9957.6703600792. The cubic root of 99155199 is about 462.8481123039.

The spelling of 99155199 in words is "ninety-nine million, one hundred fifty-five thousand, one hundred ninety-nine".