49879 has 4 divisors (see below), whose sum is σ = 51520. Its totient is φ = 48240.

The previous prime is 49877. The next prime is 49891. The reversal of 49879 is 97894.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97894 = 2 ⋅48947.

It is a cyclic number.

It is not a de Polignac number, because 49879 - 2¹ = 49877 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49871) 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, 774 + ... + 835.

It is an arithmetic number, because the mean of its divisors is an integer number (12880).

2⁴⁹⁸⁷⁹ is an apocalyptic number.

49879 is a deficient number, since it is larger than the sum of its proper divisors (1641).

49879 is a wasteful number, since it uses less digits than its factorization.

49879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its digits is 18144, while the sum is 37.

The square root of 49879 is about 223.3360696350. The cubic root of 49879 is about 36.8105731276.

It can be divided in two parts, 49 and 879, that multiplied together give a triangular number (43071 = T₂₉₃).

The spelling of 49879 in words is "forty-nine thousand, eight hundred seventy-nine".