879947 has 8 divisors (see below), whose sum is σ = 958800. Its totient is φ = 804384.

The previous prime is 879941. The next prime is 879953. The reversal of 879947 is 749978.

It is an interprime number because it is at equal distance from previous prime (879941) and next prime (879953).

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

It is not a de Polignac number, because 879947 - 2⁸ = 879691 is a prime.

It is a super-3 number, since 3×879947³ = 2044046633446833369, which contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 879898 and 879907.

It is not an unprimeable number, because it can be changed into a prime (879941) 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, 248 + ... + 1349.

It is an arithmetic number, because the mean of its divisors is an integer number (119850).

2⁸⁷⁹⁹⁴⁷ is an apocalyptic number.

879947 is a deficient number, since it is larger than the sum of its proper divisors (78853).

879947 is a wasteful number, since it uses less digits than its factorization.

879947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645.

The product of its digits is 127008, while the sum is 44.

The square root of 879947 is about 938.0549024444. The cubic root of 879947 is about 95.8264732750.

The spelling of 879947 in words is "eight hundred seventy-nine thousand, nine hundred forty-seven".