199492723 has 8 divisors (see below), whose sum is σ = 210129920. Its totient is φ = 188869320.

The previous prime is 199492697. The next prime is 199492751. The reversal of 199492723 is 327294991.

It is a happy number.

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 199492723 - 2⁵ = 199492691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199492763) 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, 41158 + ... + 45748.

It is an arithmetic number, because the mean of its divisors is an integer number (26266240).

Almost surely, 2^199492723 is an apocalyptic number.

199492723 is a deficient number, since it is larger than the sum of its proper divisors (10637197).

199492723 is a wasteful number, since it uses less digits than its factorization.

199492723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6897.

The product of its digits is 244944, while the sum is 46.

The square root of 199492723 is about 14124.1892864688. The cubic root of 199492723 is about 584.3087000497.

The spelling of 199492723 in words is "one hundred ninety-nine million, four hundred ninety-two thousand, seven hundred twenty-three".