49717939 has 4 divisors (see below), whose sum is σ = 50347360. Its totient is φ = 49088520.

The previous prime is 49717909. The next prime is 49717991. The reversal of 49717939 is 93971794.

It is a happy number.

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 49717939 - 2⁵ = 49717907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49717892 and 49717901.

It is not an unprimeable number, because it can be changed into a prime (49717909) 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, 314592 + ... + 314749.

It is an arithmetic number, because the mean of its divisors is an integer number (12586840).

Almost surely, 2^49717939 is an apocalyptic number.

49717939 is a deficient number, since it is larger than the sum of its proper divisors (629421).

49717939 is an equidigital number, since it uses as much as digits as its factorization.

49717939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629420.

The product of its digits is 428652, while the sum is 49.

The square root of 49717939 is about 7051.0948795205. The cubic root of 49717939 is about 367.7090953796.

The spelling of 49717939 in words is "forty-nine million, seven hundred seventeen thousand, nine hundred thirty-nine".