29979 has 6 divisors (see below), whose sum is σ = 43316. Its totient is φ = 19980.

The previous prime is 29959. The next prime is 29983. The reversal of 29979 is 97992.

It is not a de Polignac number, because 29979 - 2⁵ = 29947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1657 + ... + 1674.

2²⁹⁹⁷⁹ is an apocalyptic number.

29979 is a deficient number, since it is larger than the sum of its proper divisors (13337).

29979 is a wasteful number, since it uses less digits than its factorization.

29979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337 (or 3334 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 29979 is about 173.1444483661. The cubic root of 29979 is about 31.0650731580.

It can be divided in two parts, 299 and 79, that added together give a triangular number (378 = T₂₇).

The spelling of 29979 in words is "twenty-nine thousand, nine hundred seventy-nine".