194369947 has 2 divisors, whose sum is σ = 194369948. Its totient is φ = 194369946.

The previous prime is 194369911. The next prime is 194369953. The reversal of 194369947 is 749963491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194369947 - 2¹⁵ = 194337179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194369894 and 194369903.

It is not a weakly prime, because it can be changed into another prime (194369647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97184973 + 97184974.

It is an arithmetic number, because the mean of its divisors is an integer number (97184974).

Almost surely, 2^194369947 is an apocalyptic number.

194369947 is a deficient number, since it is larger than the sum of its proper divisors (1).

194369947 is an equidigital number, since it uses as much as digits as its factorization.

194369947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 194369947 is about 13941.6622753530. The cubic root of 194369947 is about 579.2637775249.

The spelling of 194369947 in words is "one hundred ninety-four million, three hundred sixty-nine thousand, nine hundred forty-seven".