199296749 has 4 divisors (see below), whose sum is σ = 202674720. Its totient is φ = 195918780.

The previous prime is 199296743. The next prime is 199296827. The reversal of 199296749 is 947692991.

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, and also an emirpimes, since its reverse is a distinct semiprime: 947692991 = 7 ⋅135384713.

It is a cyclic number.

It is not a de Polignac number, because 199296749 - 2²⁰ = 198248173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199296694 and 199296703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199296743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688897 + ... + 1689014.

It is an arithmetic number, because the mean of its divisors is an integer number (50668680).

Almost surely, 2^199296749 is an apocalyptic number.

It is an amenable number.

199296749 is a deficient number, since it is larger than the sum of its proper divisors (3377971).

199296749 is an equidigital number, since it uses as much as digits as its factorization.

199296749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377970.

The product of its digits is 2204496, while the sum is 56.

The square root of 199296749 is about 14117.2500509129. The cubic root of 199296749 is about 584.1173032100.

The spelling of 199296749 in words is "one hundred ninety-nine million, two hundred ninety-six thousand, seven hundred forty-nine".