72198199 has 2 divisors, whose sum is σ = 72198200. Its totient is φ = 72198198.

The previous prime is 72198187. The next prime is 72198209. The reversal of 72198199 is 99189127.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72198199 - 2¹¹ = 72196151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72198149) 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 as a sum of consecutive naturals, namely, 36099099 + 36099100.

It is an arithmetic number, because the mean of its divisors is an integer number (36099100).

Almost surely, 2^72198199 is an apocalyptic number.

72198199 is a deficient number, since it is larger than the sum of its proper divisors (1).

72198199 is an equidigital number, since it uses as much as digits as its factorization.

72198199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 46.

The square root of 72198199 is about 8496.9523359849. The cubic root of 72198199 is about 416.3981468480.

The spelling of 72198199 in words is "seventy-two million, one hundred ninety-eight thousand, one hundred ninety-nine".