199672999 has 2 divisors, whose sum is σ = 199673000. Its totient is φ = 199672998.

The previous prime is 199672981. The next prime is 199673003. The reversal of 199672999 is 999276991.

It is a strong prime.

It is an emirp because it is prime and its reverse (999276991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199672999 - 2¹¹ = 199670951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199672969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99836499 + 99836500.

It is an arithmetic number, because the mean of its divisors is an integer number (99836500).

Almost surely, 2^199672999 is an apocalyptic number.

199672999 is a deficient number, since it is larger than the sum of its proper divisors (1).

199672999 is an equidigital number, since it uses as much as digits as its factorization.

199672999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4960116, while the sum is 61.

The square root of 199672999 is about 14130.5696629683. The cubic root of 199672999 is about 584.4846548741.

The spelling of 199672999 in words is "one hundred ninety-nine million, six hundred seventy-two thousand, nine hundred ninety-nine".