194034397 has 2 divisors, whose sum is σ = 194034398. Its totient is φ = 194034396.

The previous prime is 194034391. The next prime is 194034437. The reversal of 194034397 is 793430491.

It is a happy number.

It is an a-pointer prime, because the next prime (194034437) can be obtained adding 194034397 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168844036 + 25190361 = 12994^2 + 5019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194034397 is a prime.

It is equal to p_10766866 and since 194034397 and 10766866 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194034391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97017198 + 97017199.

It is an arithmetic number, because the mean of its divisors is an integer number (97017199).

Almost surely, 2^194034397 is an apocalyptic number.

It is an amenable number.

194034397 is a deficient number, since it is larger than the sum of its proper divisors (1).

194034397 is an equidigital number, since it uses as much as digits as its factorization.

194034397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 194034397 is about 13929.6230027952. The cubic root of 194034397 is about 578.9302487359.

The spelling of 194034397 in words is "one hundred ninety-four million, thirty-four thousand, three hundred ninety-seven".