199262991 has 8 divisors (see below), whose sum is σ = 269426304. Its totient is φ = 130970840.

The previous prime is 199262983. The next prime is 199263023.

199262991 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 199262991 - 2³ = 199262983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199262991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199262951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467541 + ... + 467966.

It is an arithmetic number, because the mean of its divisors is an integer number (33678288).

Almost surely, 2^199262991 is an apocalyptic number.

199262991 is a deficient number, since it is larger than the sum of its proper divisors (70163313).

199262991 is an equidigital number, since it uses as much as digits as its factorization.

199262991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935581.

The product of its digits is 157464, while the sum is 48.

The square root of 199262991 is about 14116.0543708219. The cubic root of 199262991 is about 584.0843209938.

The spelling of 199262991 in words is "one hundred ninety-nine million, two hundred sixty-two thousand, nine hundred ninety-one".