199726149 has 32 divisors (see below), whose sum is σ = 332660736. Its totient is φ = 103944960.

The previous prime is 199726127. The next prime is 199726193. The reversal of 199726149 is 941627991.

It is not a de Polignac number, because 199726149 - 2⁵ = 199726117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199726098 and 199726107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199726199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2044 + ... + 20090.

It is an arithmetic number, because the mean of its divisors is an integer number (10395648).

Almost surely, 2^199726149 is an apocalyptic number.

It is an amenable number.

199726149 is a deficient number, since it is larger than the sum of its proper divisors (132934587).

199726149 is a wasteful number, since it uses less digits than its factorization.

199726149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18105.

The product of its digits is 244944, while the sum is 48.

The square root of 199726149 is about 14132.4502121890. The cubic root of 199726149 is about 584.5365106643.

The spelling of 199726149 in words is "one hundred ninety-nine million, seven hundred twenty-six thousand, one hundred forty-nine".