199001994 has 16 divisors (see below), whose sum is σ = 400641600. Its totient is φ = 65894400.

The previous prime is 199001977. The next prime is 199002059. The reversal of 199001994 is 499100991.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108919 + ... + 110730.

It is an arithmetic number, because the mean of its divisors is an integer number (25040100).

Almost surely, 2^199001994 is an apocalyptic number.

199001994 is an abundant number, since it is smaller than the sum of its proper divisors (201639606).

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

199001994 is a wasteful number, since it uses less digits than its factorization.

199001994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219805.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 199001994 is about 14106.8066549450. The cubic root of 199001994 is about 583.8291960774.

The spelling of 199001994 in words is "one hundred ninety-nine million, one thousand, nine hundred ninety-four".