879487 has 4 divisors (see below), whose sum is σ = 1005136. Its totient is φ = 753840.

The previous prime is 879457. The next prime is 879493. The reversal of 879487 is 784978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784978 = 2 ⋅392489.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879487 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62814 + ... + 62827.

It is an arithmetic number, because the mean of its divisors is an integer number (251284).

2⁸⁷⁹⁴⁸⁷ is an apocalyptic number.

879487 is a deficient number, since it is larger than the sum of its proper divisors (125649).

879487 is a wasteful number, since it uses less digits than its factorization.

879487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125648.

The product of its digits is 112896, while the sum is 43.

The square root of 879487 is about 937.8096821850. The cubic root of 879487 is about 95.8097723217.

The spelling of 879487 in words is "eight hundred seventy-nine thousand, four hundred eighty-seven".