199790772 has 24 divisors (see below), whose sum is σ = 467999616. Its totient is φ = 66336768.

The previous prime is 199790741. The next prime is 199790777. The reversal of 199790772 is 277097991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199790777) 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, 29308 + ... + 35475.

It is an arithmetic number, because the mean of its divisors is an integer number (19499984).

Almost surely, 2^199790772 is an apocalyptic number.

199790772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199790772 is an abundant number, since it is smaller than the sum of its proper divisors (268208844).

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

199790772 is a wasteful number, since it uses less digits than its factorization.

199790772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65047 (or 65045 counting only the distinct ones).

The product of its (nonzero) digits is 500094, while the sum is 51.

The square root of 199790772 is about 14134.7363611777. The cubic root of 199790772 is about 584.5995476941.

The spelling of 199790772 in words is "one hundred ninety-nine million, seven hundred ninety thousand, seven hundred seventy-two".