947869 has 8 divisors (see below), whose sum is σ = 1081080. Its totient is φ = 823296.

The previous prime is 947861. The next prime is 947873. The reversal of 947869 is 968749.

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 632025 = 562^2 + 795^2 .

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 947869 - 2³ = 947861 is a prime.

It is a super-2 number, since 2×947869² = 1796911282322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1924 + ... + 2365.

It is an arithmetic number, because the mean of its divisors is an integer number (135135).

2⁹⁴⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

947869 is a deficient number, since it is larger than the sum of its proper divisors (133211).

947869 is a wasteful number, since it uses less digits than its factorization.

947869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319.

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

The square root of 947869 is about 973.5856408144. The cubic root of 947869 is about 98.2311978558.

The spelling of 947869 in words is "nine hundred forty-seven thousand, eight hundred sixty-nine".