191944 has 8 divisors (see below), whose sum is σ = 359910. Its totient is φ = 95968.

The previous prime is 191929. The next prime is 191953. The reversal of 191944 is 449191.

It can be written as a sum of positive squares in only one way, i.e., 191844 + 100 = 438^2 + 10^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

191944 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11989 + ... + 12004.

2¹⁹¹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

191944 is a deficient number, since it is larger than the sum of its proper divisors (167966).

191944 is a wasteful number, since it uses less digits than its factorization.

191944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23999 (or 23995 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 191944 is about 438.1141403790. The cubic root of 191944 is about 57.6843735186.

The spelling of 191944 in words is "one hundred ninety-one thousand, nine hundred forty-four".