947239 has 2 divisors, whose sum is σ = 947240. Its totient is φ = 947238.

The previous prime is 947203. The next prime is 947263. The reversal of 947239 is 932749.

It is a strong prime.

It is an emirp because it is prime and its reverse (932749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947239 - 2⁹ = 946727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473619 + 473620.

It is an arithmetic number, because the mean of its divisors is an integer number (473620).

2⁹⁴⁷²³⁹ is an apocalyptic number.

947239 is a deficient number, since it is larger than the sum of its proper divisors (1).

947239 is an equidigital number, since it uses as much as digits as its factorization.

947239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 947239 is about 973.2620407681. The cubic root of 947239 is about 98.2094299496.

The spelling of 947239 in words is "nine hundred forty-seven thousand, two hundred thirty-nine".