199090744 has 32 divisors (see below), whose sum is σ = 380160000. Its totient is φ = 97729632.

The previous prime is 199090741. The next prime is 199090807. The reversal of 199090744 is 447090991.

It is a self number, because there is not a number n which added to its sum of digits gives 199090744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199090741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124977 + ... + 126559.

It is an arithmetic number, because the mean of its divisors is an integer number (11880000).

Almost surely, 2^199090744 is an apocalyptic number.

It is an amenable number.

199090744 is a deficient number, since it is larger than the sum of its proper divisors (181069256).

199090744 is a wasteful number, since it uses less digits than its factorization.

199090744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 199090744 is about 14109.9519488905. The cubic root of 199090744 is about 583.9159743375.

The spelling of 199090744 in words is "one hundred ninety-nine million, ninety thousand, seven hundred forty-four".