199213597 has 8 divisors (see below), whose sum is σ = 219036672. Its totient is φ = 179676000.

The previous prime is 199213577. The next prime is 199213631. The reversal of 199213597 is 795312991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199213597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199213507) 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 in 7 ways as a sum of consecutive naturals, for example, 69904 + ... + 72697.

It is an arithmetic number, because the mean of its divisors is an integer number (27379584).

Almost surely, 2^199213597 is an apocalyptic number.

It is an amenable number.

199213597 is a deficient number, since it is larger than the sum of its proper divisors (19823075).

199213597 is a wasteful number, since it uses less digits than its factorization.

199213597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142739.

The product of its digits is 153090, while the sum is 46.

The square root of 199213597 is about 14114.3046941746. The cubic root of 199213597 is about 584.0360553911.

The spelling of 199213597 in words is "one hundred ninety-nine million, two hundred thirteen thousand, five hundred ninety-seven".