947144317 has 4 divisors (see below), whose sum is σ = 1082450656. Its totient is φ = 811837980.

The previous prime is 947144309. The next prime is 947144339. The reversal of 947144317 is 713441749.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 947144317 - 2³ = 947144309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 947144317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947147317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67653159 + ... + 67653172.

It is an arithmetic number, because the mean of its divisors is an integer number (270612664).

Almost surely, 2^947144317 is an apocalyptic number.

It is an amenable number.

947144317 is a deficient number, since it is larger than the sum of its proper divisors (135306339).

947144317 is a wasteful number, since it uses less digits than its factorization.

947144317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135306338.

The product of its digits is 84672, while the sum is 40.

The square root of 947144317 is about 30775.7098537142. The cubic root of 947144317 is about 982.0615760642.

The spelling of 947144317 in words is "nine hundred forty-seven million, one hundred forty-four thousand, three hundred seventeen".