199523147 has 2 divisors, whose sum is σ = 199523148. Its totient is φ = 199523146.

The previous prime is 199523141. The next prime is 199523153. The reversal of 199523147 is 741325991.

It is a balanced prime because it is at equal distance from previous prime (199523141) and next prime (199523153).

It is a cyclic number.

It is not a de Polignac number, because 199523147 - 2¹² = 199519051 is a prime.

It is not a weakly prime, because it can be changed into another prime (199523141) 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, 99761573 + 99761574.

It is an arithmetic number, because the mean of its divisors is an integer number (99761574).

Almost surely, 2^199523147 is an apocalyptic number.

199523147 is a deficient number, since it is larger than the sum of its proper divisors (1).

199523147 is an equidigital number, since it uses as much as digits as its factorization.

199523147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 199523147 is about 14125.2662629771. The cubic root of 199523147 is about 584.3384022263.

The spelling of 199523147 in words is "one hundred ninety-nine million, five hundred twenty-three thousand, one hundred forty-seven".