879751 has 4 divisors (see below), whose sum is σ = 882432. Its totient is φ = 877072.

The previous prime is 879743. The next prime is 879797. The reversal of 879751 is 157978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157978 = 2 ⋅78989.

It is a cyclic number.

It is not a de Polignac number, because 879751 - 2³ = 879743 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 879751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (220608).

2⁸⁷⁹⁷⁵¹ is an apocalyptic number.

879751 is the 766-th pentagonal number.

879751 is a deficient number, since it is larger than the sum of its proper divisors (2681).

879751 is a wasteful number, since it uses less digits than its factorization.

879751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680.

The product of its digits is 17640, while the sum is 37.

The square root of 879751 is about 937.9504251292. The cubic root of 879751 is about 95.8193579285.

The spelling of 879751 in words is "eight hundred seventy-nine thousand, seven hundred fifty-one".