1000879 has 4 divisors (see below), whose sum is σ = 1091880. Its totient is φ = 909880.

The previous prime is 1000861. The next prime is 1000889. The reversal of 1000879 is 9780001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000879 - 2⁵ = 1000847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000829) 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 3 ways as a sum of consecutive naturals, for example, 45484 + ... + 45505.

It is an arithmetic number, because the mean of its divisors is an integer number (272970).

2^1000879 is an apocalyptic number.

1000879 is a deficient number, since it is larger than the sum of its proper divisors (91001).

1000879 is an equidigital number, since it uses as much as digits as its factorization.

1000879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91000.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1000879 is about 1000.4394034623. The cubic root of 1000879 is about 100.0292914193.

The spelling of 1000879 in words is "one million, eight hundred seventy-nine", and thus it is an aban number.