194427297 has 20 divisors (see below), whose sum is σ = 296626176. Its totient is φ = 126857880.

The previous prime is 194427293. The next prime is 194427307. The reversal of 194427297 is 792724491.

It is a happy number.

It is not a de Polignac number, because 194427297 - 2² = 194427293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194427293) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21729 + ... + 29342.

Almost surely, 2^194427297 is an apocalyptic number.

It is an amenable number.

194427297 is a deficient number, since it is larger than the sum of its proper divisors (102198879).

194427297 is an equidigital number, since it uses as much as digits as its factorization.

194427297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51130 (or 51121 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 194427297 is about 13943.7189085265. The cubic root of 194427297 is about 579.3207436546.

It can be divided in two parts, 1944 and 27297, that added together give a square (29241 = 171²).

The spelling of 194427297 in words is "one hundred ninety-four million, four hundred twenty-seven thousand, two hundred ninety-seven".