947958309 has 24 divisors (see below), whose sum is σ = 1421757792. Its totient is φ = 631184400.

The previous prime is 947958283. The next prime is 947958311. The reversal of 947958309 is 903859749.

It is not a de Polignac number, because 947958309 - 2¹³ = 947950117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947954309) 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 in 23 ways as a sum of consecutive naturals, for example, 244234 + ... + 248084.

It is an arithmetic number, because the mean of its divisors is an integer number (59239908).

Almost surely, 2^947958309 is an apocalyptic number.

It is an amenable number.

947958309 is a deficient number, since it is larger than the sum of its proper divisors (473799483).

947958309 is a wasteful number, since it uses less digits than its factorization.

947958309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879 (or 4867 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The square root of 947958309 is about 30788.9315988717. The cubic root of 947958309 is about 982.3428290047.

The spelling of 947958309 in words is "nine hundred forty-seven million, nine hundred fifty-eight thousand, three hundred nine".