47190197 has 2 divisors, whose sum is σ = 47190198. Its totient is φ = 47190196.

The previous prime is 47190161. The next prime is 47190223. The reversal of 47190197 is 79109174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24542116 + 22648081 = 4954^2 + 4759^2 .

It is a cyclic number.

It is not a de Polignac number, because 47190197 - 2⁸ = 47189941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47190197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47190107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23595098 + 23595099.

It is an arithmetic number, because the mean of its divisors is an integer number (23595099).

Almost surely, 2^47190197 is an apocalyptic number.

It is an amenable number.

47190197 is a deficient number, since it is larger than the sum of its proper divisors (1).

47190197 is an equidigital number, since it uses as much as digits as its factorization.

47190197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 47190197 is about 6869.5121369716. The cubic root of 47190197 is about 361.3687527593.

The spelling of 47190197 in words is "forty-seven million, one hundred ninety thousand, one hundred ninety-seven".