199025867 has 2 divisors, whose sum is σ = 199025868. Its totient is φ = 199025866.

The previous prime is 199025833. The next prime is 199025881. The reversal of 199025867 is 768520991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199025867 - 2²² = 194831563 is a prime.

It is a super-2 number, since 2×199025867² = 79222591470203378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199025807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99512933 + 99512934.

It is an arithmetic number, because the mean of its divisors is an integer number (99512934).

Almost surely, 2^199025867 is an apocalyptic number.

199025867 is a deficient number, since it is larger than the sum of its proper divisors (1).

199025867 is an equidigital number, since it uses as much as digits as its factorization.

199025867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 199025867 is about 14107.6527813807. The cubic root of 199025867 is about 583.8525412323.

The spelling of 199025867 in words is "one hundred ninety-nine million, twenty-five thousand, eight hundred sixty-seven".