194297994 has 64 divisors (see below), whose sum is σ = 482042880. Its totient is φ = 57501360.

The previous prime is 194297977. The next prime is 194298007. The reversal of 194297994 is 499792491.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 194297994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21739 + ... + 29345.

It is an arithmetic number, because the mean of its divisors is an integer number (7531920).

Almost surely, 2^194297994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194297994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241021440).

194297994 is an abundant number, since it is smaller than the sum of its proper divisors (287744886).

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

194297994 is a wasteful number, since it uses less digits than its factorization.

194297994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7672 (or 7666 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 194297994 is about 13939.0815335875. The cubic root of 194297994 is about 579.1922902890.

The spelling of 194297994 in words is "one hundred ninety-four million, two hundred ninety-seven thousand, nine hundred ninety-four".