47974217 has 2 divisors, whose sum is σ = 47974218. Its totient is φ = 47974216.

The previous prime is 47974193. The next prime is 47974229. The reversal of 47974217 is 71247974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36711481 + 11262736 = 6059^2 + 3356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47974217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47974417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23987108 + 23987109.

It is an arithmetic number, because the mean of its divisors is an integer number (23987109).

Almost surely, 2^47974217 is an apocalyptic number.

It is an amenable number.

47974217 is a deficient number, since it is larger than the sum of its proper divisors (1).

47974217 is an equidigital number, since it uses as much as digits as its factorization.

47974217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The square root of 47974217 is about 6926.3422525890. The cubic root of 47974217 is about 363.3590363285.

The spelling of 47974217 in words is "forty-seven million, nine hundred seventy-four thousand, two hundred seventeen".