947944685 has 4 divisors (see below), whose sum is σ = 1137533628. Its totient is φ = 758355744.

The previous prime is 947944631. The next prime is 947944687. The reversal of 947944685 is 586449749.

947944685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586449749 = 4591 ⋅127739.

It can be written as a sum of positive squares in 2 ways, for example, as 698967844 + 248976841 = 26438^2 + 15779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947944685 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 947944685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947944687) 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, 94794464 + ... + 94794473.

It is an arithmetic number, because the mean of its divisors is an integer number (284383407).

Almost surely, 2^947944685 is an apocalyptic number.

It is an amenable number.

947944685 is a deficient number, since it is larger than the sum of its proper divisors (189588943).

947944685 is a wasteful number, since it uses less digits than its factorization.

947944685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189588942.

The product of its digits is 8709120, while the sum is 56.

The square root of 947944685 is about 30788.7103497370. The cubic root of 947944685 is about 982.3381229247.

The spelling of 947944685 in words is "nine hundred forty-seven million, nine hundred forty-four thousand, six hundred eighty-five".