49931187 has 4 divisors (see below), whose sum is σ = 66574920. Its totient is φ = 33287456.

The previous prime is 49931149. The next prime is 49931191. The reversal of 49931187 is 78113994.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 49931187 - 2⁷ = 49931059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49931117) 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, 8321862 + ... + 8321867.

It is an arithmetic number, because the mean of its divisors is an integer number (16643730).

Almost surely, 2^49931187 is an apocalyptic number.

49931187 is a deficient number, since it is larger than the sum of its proper divisors (16643733).

49931187 is a wasteful number, since it uses less digits than its factorization.

49931187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16643732.

The product of its digits is 54432, while the sum is 42.

The square root of 49931187 is about 7066.2003226628. The cubic root of 49931187 is about 368.2340660995.

The spelling of 49931187 in words is "forty-nine million, nine hundred thirty-one thousand, one hundred eighty-seven".