199261693 has 4 divisors (see below), whose sum is σ = 199997248. Its totient is φ = 198526140.

The previous prime is 199261679. The next prime is 199261729. The reversal of 199261693 is 396162991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199261693 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 (199261093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367371 + ... + 367912.

It is an arithmetic number, because the mean of its divisors is an integer number (49999312).

Almost surely, 2^199261693 is an apocalyptic number.

It is an amenable number.

199261693 is a deficient number, since it is larger than the sum of its proper divisors (735555).

199261693 is an equidigital number, since it uses as much as digits as its factorization.

199261693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735554.

The product of its digits is 157464, while the sum is 46.

The square root of 199261693 is about 14116.0083947269. The cubic root of 199261693 is about 584.0830527485.

The spelling of 199261693 in words is "one hundred ninety-nine million, two hundred sixty-one thousand, six hundred ninety-three".