947986 has 24 divisors (see below), whose sum is σ = 1632204. Its totient is φ = 410400.

The previous prime is 947963. The next prime is 947987. The reversal of 947986 is 689749.

It can be written as a sum of positive squares in 2 ways, for example, as 938961 + 9025 = 969^2 + 95^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (947987) 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 11 ways as a sum of consecutive naturals, for example, 9336 + ... + 9436.

2⁹⁴⁷⁹⁸⁶ is an apocalyptic number.

947986 is a deficient number, since it is larger than the sum of its proper divisors (684218).

947986 is a wasteful number, since it uses less digits than its factorization.

947986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 135 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 947986 is about 973.6457261242. The cubic root of 947986 is about 98.2352394049.

The spelling of 947986 in words is "nine hundred forty-seven thousand, nine hundred eighty-six".