947139 has 8 divisors (see below), whose sum is σ = 1267392. Its totient is φ = 629160.

The previous prime is 947137. The next prime is 947171. The reversal of 947139 is 931749.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 947139 - 2¹ = 947137 is a prime.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 947139.

It is not an unprimeable number, because it can be changed into a prime (947137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152 + ... + 1794.

It is an arithmetic number, because the mean of its divisors is an integer number (158424).

2⁹⁴⁷¹³⁹ is an apocalyptic number.

947139 is a deficient number, since it is larger than the sum of its proper divisors (320253).

947139 is a wasteful number, since it uses less digits than its factorization.

947139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137.

The product of its digits is 6804, while the sum is 33.

The square root of 947139 is about 973.2106657862. The cubic root of 947139 is about 98.2059738389.

The spelling of 947139 in words is "nine hundred forty-seven thousand, one hundred thirty-nine".