49397926877 has 4 divisors (see below), whose sum is σ = 53197767420. Its totient is φ = 45598086336.

The previous prime is 49397926861. The next prime is 49397926913. The reversal of 49397926877 is 77862979394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77862979394 = 2 ⋅38931489697.

It can be written as a sum of positive squares in 2 ways, for example, as 2184721081 + 47213205796 = 46741^2 + 217286^2 .

It is a cyclic number.

It is not a de Polignac number, because 49397926877 - 2⁴ = 49397926861 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 49397926877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49397926807) 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, 1899920252 + ... + 1899920277.

It is an arithmetic number, because the mean of its divisors is an integer number (13299441855).

Almost surely, 2^49397926877 is an apocalyptic number.

It is an amenable number.

49397926877 is a deficient number, since it is larger than the sum of its proper divisors (3799840543).

49397926877 is a wasteful number, since it uses less digits than its factorization.

49397926877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3799840542.

The product of its digits is 288054144, while the sum is 71.

The spelling of 49397926877 in words is "forty-nine billion, three hundred ninety-seven million, nine hundred twenty-six thousand, eight hundred seventy-seven".