49961879 has 4 divisors (see below), whose sum is σ = 54503880. Its totient is φ = 45419880.

The previous prime is 49961843. The next prime is 49961897. The reversal of 49961879 is 97816994.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-49961879 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 49961879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49961179) 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, 2270984 + ... + 2271005.

It is an arithmetic number, because the mean of its divisors is an integer number (13625970).

Almost surely, 2^49961879 is an apocalyptic number.

49961879 is a deficient number, since it is larger than the sum of its proper divisors (4542001).

49961879 is a wasteful number, since it uses less digits than its factorization.

49961879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542000.

The product of its digits is 979776, while the sum is 53.

The square root of 49961879 is about 7068.3717361214. The cubic root of 49961879 is about 368.3095000833.

The spelling of 49961879 in words is "forty-nine million, nine hundred sixty-one thousand, eight hundred seventy-nine".