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4979 = 13383
BaseRepresentation
bin1001101110011
320211102
41031303
5124404
635015
720342
oct11563
96742
104979
113817
122a6b
132360
141b59
15171e
hex1373

4979 has 4 divisors (see below), whose sum is σ = 5376. Its totient is φ = 4584.

The previous prime is 4973. The next prime is 4987. The reversal of 4979 is 9794.

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 4979 - 28 = 4723 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 4979.

It is not an unprimeable number, because it can be changed into a prime (4973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179 + ... + 204.

It is an arithmetic number, because the mean of its divisors is an integer number (1344).

4979 is a deficient number, since it is larger than the sum of its proper divisors (397).

4979 is a wasteful number, since it uses less digits than its factorization.

4979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its digits is 2268, while the sum is 29.

The square root of 4979 is about 70.5620294493. The cubic root of 4979 is about 17.0757862096.

Subtracting from 4979 its sum of digits (29), we obtain a triangular number (4950 = T99).

It can be divided in two parts, 49 and 79, that added together give a 7-th power (128 = 27).

The spelling of 4979 in words is "four thousand, nine hundred seventy-nine".

Divisors: 1 13 383 4979