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104979 = 374999
BaseRepresentation
bin11001101000010011
312100000010
4121220103
511324404
62130003
7615030
oct315023
9170003
10104979
1171966
1250903
1338a24
142a387
1521189
hex19a13

104979 has 8 divisors (see below), whose sum is σ = 160000. Its totient is φ = 59976.

The previous prime is 104971. The next prime is 104987. The reversal of 104979 is 979401.

104979 = 802 + 812 + ... + 932.

It is an interprime number because it is at equal distance from previous prime (104971) and next prime (104987).

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

It is not a de Polignac number, because 104979 - 23 = 104971 is a prime.

It is a super-2 number, since 2×1049792 = 22041180882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104971) 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, 2479 + ... + 2520.

It is an arithmetic number, because the mean of its divisors is an integer number (20000).

104979 is a Friedman number, since it can be written as 10+(9+9)^4-7, using all its digits and the basic arithmetic operations.

2104979 is an apocalyptic number.

104979 is a deficient number, since it is larger than the sum of its proper divisors (55021).

104979 is an equidigital number, since it uses as much as digits as its factorization.

104979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 104979 is about 324.0046295966. The cubic root of 104979 is about 47.1737944641.

It can be divided in two parts, 1049 and 79, that added together give a triangular number (1128 = T47).

The spelling of 104979 in words is "one hundred four thousand, nine hundred seventy-nine".

Divisors: 1 3 7 21 4999 14997 34993 104979