194425447 has 4 divisors (see below), whose sum is σ = 205862256. Its totient is φ = 182988640.

The previous prime is 194425421. The next prime is 194425471. The reversal of 194425447 is 744524491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744524491 = 3769 ⋅197539.

It is a cyclic number.

It is not a de Polignac number, because 194425447 - 2¹¹ = 194423399 is a prime.

It is a super-2 number, since 2×194425447² = 75602508882299618, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194425487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5718379 + ... + 5718412.

It is an arithmetic number, because the mean of its divisors is an integer number (51465564).

Almost surely, 2^194425447 is an apocalyptic number.

194425447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

194425447 is a deficient number, since it is larger than the sum of its proper divisors (11436809).

194425447 is a wasteful number, since it uses less digits than its factorization.

194425447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11436808.

The product of its digits is 161280, while the sum is 40.

The square root of 194425447 is about 13943.6525702558. The cubic root of 194425447 is about 579.3189062124.

The spelling of 194425447 in words is "one hundred ninety-four million, four hundred twenty-five thousand, four hundred forty-seven".