194097949 has 2 divisors, whose sum is σ = 194097950. Its totient is φ = 194097948.

The previous prime is 194097947. The next prime is 194097983. The reversal of 194097949 is 949790491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169911225 + 24186724 = 13035^2 + 4918^2 .

It is a cyclic number.

It is not a de Polignac number, because 194097949 - 2¹ = 194097947 is a prime.

Together with 194097947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 194097896 and 194097905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194097941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97048974 + 97048975.

It is an arithmetic number, because the mean of its divisors is an integer number (97048975).

Almost surely, 2^194097949 is an apocalyptic number.

It is an amenable number.

194097949 is a deficient number, since it is larger than the sum of its proper divisors (1).

194097949 is an equidigital number, since it uses as much as digits as its factorization.

194097949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 194097949 is about 13931.9039976595. The cubic root of 194097949 is about 578.9934474258.

The spelling of 194097949 in words is "one hundred ninety-four million, ninety-seven thousand, nine hundred forty-nine".