199252723 has 2 divisors, whose sum is σ = 199252724. Its totient is φ = 199252722.

The previous prime is 199252721. The next prime is 199252727. The reversal of 199252723 is 327252991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199252723 - 2¹ = 199252721 is a prime.

Together with 199252721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (199252721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99626361 + 99626362.

It is an arithmetic number, because the mean of its divisors is an integer number (99626362).

Almost surely, 2^199252723 is an apocalyptic number.

199252723 is a deficient number, since it is larger than the sum of its proper divisors (1).

199252723 is an equidigital number, since it uses as much as digits as its factorization.

199252723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 199252723 is about 14115.6906667722. The cubic root of 199252723 is about 584.0742882212.

The spelling of 199252723 in words is "one hundred ninety-nine million, two hundred fifty-two thousand, seven hundred twenty-three".