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979 = 1189
BaseRepresentation
bin1111010011
31100021
433103
512404
64311
72566
oct1723
91307
10979
11810
12697
135a4
144dd
15454
hex3d3

979 has 4 divisors (see below), whose sum is σ = 1080. Its totient is φ = 880.

The previous prime is 977. The next prime is 983.

It can be divided in two parts, 9 and 79, that added together give a palindrome (88).

979 = 14 + 24 + ... + 54.

979 is nontrivially palindromic in base 10, base 15 and base 16.

979 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 979 - 21 = 977 is a prime.

It is a Duffinian number.

979 is an undulating number in base 10, base 15 and base 16.

979 is a lucky number.

It is a plaindrome in base 7 and base 14.

It is a nialpdrome in base 6 and base 11.

It is not an unprimeable number, because it can be changed into a prime (971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34 + ... + 55.

It is an arithmetic number, because the mean of its divisors is an integer number (270).

2979 is an apocalyptic number.

979 is a deficient number, since it is larger than the sum of its proper divisors (101).

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

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

The sum of its prime factors is 100.

The product of its digits is 567, while the sum is 25.

The square root of 979 is about 31.2889756943. The cubic root of 979 is about 9.9295042020.

The spelling of 979 in words is "nine hundred seventy-nine", and thus it is an aban number and an oban number.

Divisors: 1 11 89 979