947309 has 6 divisors (see below), whose sum is σ = 1041390. Its totient is φ = 861080.

The previous prime is 947299. The next prime is 947327. The reversal of 947309 is 903749.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 644809 + 302500 = 803^2 + 550^2 .

It is not a de Polignac number, because 947309 - 2¹² = 943213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 947309.

It is not an unprimeable number, because it can be changed into a prime (947369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3794 + ... + 4035.

It is an arithmetic number, because the mean of its divisors is an integer number (173565).

2⁹⁴⁷³⁰⁹ is an apocalyptic number.

It is an amenable number.

947309 is a deficient number, since it is larger than the sum of its proper divisors (94081).

947309 is a wasteful number, since it uses less digits than its factorization.

947309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7851 (or 7840 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 947309 is about 973.2980016418. The cubic root of 947309 is about 98.2118490824.

The spelling of 947309 in words is "nine hundred forty-seven thousand, three hundred nine".