49187911 has 8 divisors (see below), whose sum is σ = 51212144. Its totient is φ = 47200320.

The previous prime is 49187893. The next prime is 49187921. The reversal of 49187911 is 11978194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49187911 - 2¹¹ = 49185863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49187921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6405 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (6401518).

Almost surely, 2^49187911 is an apocalyptic number.

49187911 is a deficient number, since it is larger than the sum of its proper divisors (2024233).

49187911 is a wasteful number, since it uses less digits than its factorization.

49187911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18321.

The product of its digits is 18144, while the sum is 40.

The square root of 49187911 is about 7013.4093706271. The cubic root of 49187911 is about 366.3977456074.

The spelling of 49187911 in words is "forty-nine million, one hundred eighty-seven thousand, nine hundred eleven".