49779943 has 4 divisors (see below), whose sum is σ = 52399960. Its totient is φ = 47159928.

The previous prime is 49779937. The next prime is 49779953. The reversal of 49779943 is 34997794.

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 49779943 - 2¹⁷ = 49648871 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 (49779913) 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 3 ways as a sum of consecutive naturals, for example, 1309980 + ... + 1310017.

It is an arithmetic number, because the mean of its divisors is an integer number (13099990).

Almost surely, 2^49779943 is an apocalyptic number.

49779943 is a deficient number, since it is larger than the sum of its proper divisors (2620017).

49779943 is a wasteful number, since it uses less digits than its factorization.

49779943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620016.

The product of its digits is 1714608, while the sum is 52.

The square root of 49779943 is about 7055.4902735388. The cubic root of 49779943 is about 367.8618904199.

The spelling of 49779943 in words is "forty-nine million, seven hundred seventy-nine thousand, nine hundred forty-three".