947989317 has 8 divisors (see below), whose sum is σ = 1378893600. Its totient is φ = 574538960.

The previous prime is 947989307. The next prime is 947989327. The reversal of 947989317 is 713989749.

It is an interprime number because it is at equal distance from previous prime (947989307) and next prime (947989327).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 947989317 - 2⁶ = 947989253 is a prime.

It is a super-2 number, since 2×947989317² = 1797367490292252978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947989307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14363442 + ... + 14363507.

It is an arithmetic number, because the mean of its divisors is an integer number (172361700).

Almost surely, 2^947989317 is an apocalyptic number.

It is an amenable number.

947989317 is a deficient number, since it is larger than the sum of its proper divisors (430904283).

947989317 is a wasteful number, since it uses less digits than its factorization.

947989317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28726963.

The product of its digits is 3429216, while the sum is 57.

The square root of 947989317 is about 30789.4351523376. The cubic root of 947989317 is about 982.3535397972.

The spelling of 947989317 in words is "nine hundred forty-seven million, nine hundred eighty-nine thousand, three hundred seventeen".