199990722 has 16 divisors (see below), whose sum is σ = 400321152. Its totient is φ = 66606960.

The previous prime is 199990711. The next prime is 199990729. The reversal of 199990722 is 227099991.

It is not an unprimeable number, because it can be changed into a prime (199990729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6153 + ... + 20924.

It is an arithmetic number, because the mean of its divisors is an integer number (25020072).

Almost surely, 2^199990722 is an apocalyptic number.

199990722 is an abundant number, since it is smaller than the sum of its proper divisors (200330430).

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

199990722 is a wasteful number, since it uses less digits than its factorization.

199990722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28313.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 199990722 is about 14141.8075930908. The cubic root of 199990722 is about 584.7945044905.

The spelling of 199990722 in words is "one hundred ninety-nine million, nine hundred ninety thousand, seven hundred twenty-two".