43198099 has 4 divisors (see below), whose sum is σ = 49369264. Its totient is φ = 37026936.

The previous prime is 43198093. The next prime is 43198157. The reversal of 43198099 is 99089134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99089134 = 2 ⋅49544567.

It is a cyclic number.

It is not a de Polignac number, because 43198099 - 2⁹ = 43197587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43198093) 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, 3085572 + ... + 3085585.

It is an arithmetic number, because the mean of its divisors is an integer number (12342316).

Almost surely, 2^43198099 is an apocalyptic number.

43198099 is a deficient number, since it is larger than the sum of its proper divisors (6171165).

43198099 is an equidigital number, since it uses as much as digits as its factorization.

43198099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171164.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 43198099 is about 6572.5260745013. The cubic root of 43198099 is about 350.8769816973.

The spelling of 43198099 in words is "forty-three million, one hundred ninety-eight thousand, ninety-nine".