199726086 has 64 divisors (see below), whose sum is σ = 465315840. Its totient is φ = 55977600.

The previous prime is 199726073. The next prime is 199726091. The reversal of 199726086 is 680627991.

199726086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835555 + ... + 835793.

It is an arithmetic number, because the mean of its divisors is an integer number (7270560).

Almost surely, 2^199726086 is an apocalyptic number.

199726086 is an abundant number, since it is smaller than the sum of its proper divisors (265589754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199726086 is a wasteful number, since it uses less digits than its factorization.

199726086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 199726086 is about 14132.4479832759. The cubic root of 199726086 is about 584.5364492039.

The spelling of 199726086 in words is "one hundred ninety-nine million, seven hundred twenty-six thousand, eighty-six".