947947 has 16 divisors (see below), whose sum is σ = 1274112. Its totient is φ = 681120.

The previous prime is 947927. The next prime is 947959. The reversal of 947947 is 749749.

It is not a de Polignac number, because 947947 - 2⁷ = 947819 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (947917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (79632).

2⁹⁴⁷⁹⁴⁷ is an apocalyptic number.

947947 is a deficient number, since it is larger than the sum of its proper divisors (326165).

947947 is a wasteful number, since it uses less digits than its factorization.

947947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978.

The product of its digits is 63504, while the sum is 40.

The square root of 947947 is about 973.6256980996. The cubic root of 947947 is about 98.2338922588.

The spelling of 947947 in words is "nine hundred forty-seven thousand, nine hundred forty-seven".