49811869 has 12 divisors (see below), whose sum is σ = 51944256. Its totient is φ = 47738432.

The previous prime is 49811837. The next prime is 49811893. The reversal of 49811869 is 96811894.

49811869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49811869 - 2⁵ = 49811837 is a prime.

It is a super-2 number, since 2×49811869² = 4962444586546322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (124416) is a multiple of the sum of its prime divisors (243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49811899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440757 + ... + 440869.

It is an arithmetic number, because the mean of its divisors is an integer number (4328688).

Almost surely, 2^49811869 is an apocalyptic number.

It is an amenable number.

49811869 is a deficient number, since it is larger than the sum of its proper divisors (2132387).

49811869 is an equidigital number, since it uses as much as digits as its factorization.

49811869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 243 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 49811869 is about 7057.7524042715. The cubic root of 49811869 is about 367.9405154522.

The spelling of 49811869 in words is "forty-nine million, eight hundred eleven thousand, eight hundred sixty-nine".