49781339 has 8 divisors (see below), whose sum is σ = 51088128. Its totient is φ = 48479040.

The previous prime is 49781323. The next prime is 49781351. The reversal of 49781339 is 93318794.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 49781339 - 2⁴ = 49781323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49781339.

It is not an unprimeable number, because it can be changed into a prime (49781399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44009 + ... + 45125.

It is an arithmetic number, because the mean of its divisors is an integer number (6386016).

Almost surely, 2^49781339 is an apocalyptic number.

49781339 is a deficient number, since it is larger than the sum of its proper divisors (1306789).

49781339 is a wasteful number, since it uses less digits than its factorization.

49781339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 163296, while the sum is 44.

The square root of 49781339 is about 7055.5892028944. The cubic root of 49781339 is about 367.8653290899.

The spelling of 49781339 in words is "forty-nine million, seven hundred eighty-one thousand, three hundred thirty-nine".