979887 has 8 divisors (see below), whose sum is σ = 1375360. Its totient is φ = 618840.

The previous prime is 979883. The next prime is 979889. The reversal of 979887 is 788979.

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

It is not a de Polignac number, because 979887 - 2² = 979883 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 (979883) 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, 8539 + ... + 8652.

It is an arithmetic number, because the mean of its divisors is an integer number (171920).

2⁹⁷⁹⁸⁸⁷ is an apocalyptic number.

979887 is a deficient number, since it is larger than the sum of its proper divisors (395473).

979887 is a wasteful number, since it uses less digits than its factorization.

979887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17213.

The product of its digits is 254016, while the sum is 48.

The square root of 979887 is about 989.8924183971. The cubic root of 979887 is about 99.3250209501.

The spelling of 979887 in words is "nine hundred seventy-nine thousand, eight hundred eighty-seven".