249114191 has 4 divisors (see below), whose sum is σ = 249156792. Its totient is φ = 249071592.

The previous prime is 249114181. The next prime is 249114199. The reversal of 249114191 is 191411942.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249114191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249114199) 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, 10805 + ... + 24798.

It is an arithmetic number, because the mean of its divisors is an integer number (62289198).

Almost surely, 2^249114191 is an apocalyptic number.

249114191 is a deficient number, since it is larger than the sum of its proper divisors (42601).

249114191 is an equidigital number, since it uses as much as digits as its factorization.

249114191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42600.

The product of its digits is 2592, while the sum is 32.

The square root of 249114191 is about 15783.3517036148. The cubic root of 249114191 is about 629.2156115152.

The spelling of 249114191 in words is "two hundred forty-nine million, one hundred fourteen thousand, one hundred ninety-one".