49439 has 4 divisors (see below), whose sum is σ = 53256. Its totient is φ = 45624.

The previous prime is 49433. The next prime is 49451. The reversal of 49439 is 93494.

It is a happy number.

49439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93494 = 2 ⋅46747.

It is a cyclic number.

It is not a de Polignac number, because 49439 - 2¹² = 45343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49433) 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, 1889 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (13314).

2⁴⁹⁴³⁹ is an apocalyptic number.

49439 is a deficient number, since it is larger than the sum of its proper divisors (3817).

49439 is a wasteful number, since it uses less digits than its factorization.

49439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816.

The product of its digits is 3888, while the sum is 29.

The square root of 49439 is about 222.3488250475. The cubic root of 49439 is about 36.7020136645.

The spelling of 49439 in words is "forty-nine thousand, four hundred thirty-nine".