194412797 has 4 divisors (see below), whose sum is σ = 197076060. Its totient is φ = 191749536.

The previous prime is 194412787. The next prime is 194412817. The reversal of 194412797 is 797214491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797214491 = 599 ⋅1330909.

It can be written as a sum of positive squares in 2 ways, for example, as 66406201 + 128006596 = 8149^2 + 11314^2 .

It is a cyclic number.

It is not a de Polignac number, because 194412797 - 2¹² = 194408701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194412707) 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, 1331522 + ... + 1331667.

It is an arithmetic number, because the mean of its divisors is an integer number (49269015).

Almost surely, 2^194412797 is an apocalyptic number.

It is an amenable number.

194412797 is a deficient number, since it is larger than the sum of its proper divisors (2663263).

194412797 is an equidigital number, since it uses as much as digits as its factorization.

194412797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663262.

The product of its digits is 127008, while the sum is 44.

The square root of 194412797 is about 13943.1989514602. The cubic root of 194412797 is about 579.3063417681.

It can be divided in two parts, 1944 and 12797, that added together give a palindrome (14741).

The spelling of 194412797 in words is "one hundred ninety-four million, four hundred twelve thousand, seven hundred ninety-seven".