49879181 has 4 divisors (see below), whose sum is σ = 54413664. Its totient is φ = 45344700.

The previous prime is 49879147. The next prime is 49879189. The reversal of 49879181 is 18197894.

49879181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49879181 - 2⁶ = 49879117 is a prime.

It is a super-2 number, since 2×49879181² = 4975865394461522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49879189) 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 3 ways as a sum of consecutive naturals, for example, 2267225 + ... + 2267246.

It is an arithmetic number, because the mean of its divisors is an integer number (13603416).

Almost surely, 2^49879181 is an apocalyptic number.

It is an amenable number.

49879181 is a deficient number, since it is larger than the sum of its proper divisors (4534483).

49879181 is a wasteful number, since it uses less digits than its factorization.

49879181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534482.

The product of its digits is 145152, while the sum is 47.

The square root of 49879181 is about 7062.5194513006. The cubic root of 49879181 is about 368.1061765342.

The spelling of 49879181 in words is "forty-nine million, eight hundred seventy-nine thousand, one hundred eighty-one".