201947 has 2 divisors, whose sum is σ = 201948. Its totient is φ = 201946.

The previous prime is 201937. The next prime is 201953. The reversal of 201947 is 749102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201947 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 201947.

It is not a weakly prime, because it can be changed into another prime (201907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100973 + 100974.

It is an arithmetic number, because the mean of its divisors is an integer number (100974).

2²⁰¹⁹⁴⁷ is an apocalyptic number.

201947 is a deficient number, since it is larger than the sum of its proper divisors (1).

201947 is an equidigital number, since it uses as much as digits as its factorization.

201947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 201947 is about 449.3851354907. The cubic root of 201947 is about 58.6695110249.

The spelling of 201947 in words is "two hundred one thousand, nine hundred forty-seven".