201395947 has 2 divisors, whose sum is σ = 201395948. Its totient is φ = 201395946.

The previous prime is 201395941. The next prime is 201395951. The reversal of 201395947 is 749593102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201395947 - 2¹⁹ = 200871659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201395941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100697973 + 100697974.

It is an arithmetic number, because the mean of its divisors is an integer number (100697974).

Almost surely, 2^201395947 is an apocalyptic number.

201395947 is a deficient number, since it is larger than the sum of its proper divisors (1).

201395947 is an equidigital number, since it uses as much as digits as its factorization.

201395947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 201395947 is about 14191.4039826932. The cubic root of 201395947 is about 586.1609856015.

The spelling of 201395947 in words is "two hundred one million, three hundred ninety-five thousand, nine hundred forty-seven".