49991079 has 4 divisors (see below), whose sum is σ = 66654776. Its totient is φ = 33327384.

The previous prime is 49991077. The next prime is 49991089. The reversal of 49991079 is 97019994.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 49991079 - 2¹ = 49991077 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 (49991077) 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, 8331844 + ... + 8331849.

It is an arithmetic number, because the mean of its divisors is an integer number (16663694).

Almost surely, 2^49991079 is an apocalyptic number.

49991079 is a deficient number, since it is larger than the sum of its proper divisors (16663697).

49991079 is a wasteful number, since it uses less digits than its factorization.

49991079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663696.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 49991079 is about 7070.4369737662. The cubic root of 49991079 is about 368.3812383975.

The spelling of 49991079 in words is "forty-nine million, nine hundred ninety-one thousand, seventy-nine".