249384271 has 4 divisors (see below), whose sum is σ = 264053952. Its totient is φ = 234714592.

The previous prime is 249384269. The next prime is 249384283. The reversal of 249384271 is 172483942.

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 249384271 - 2¹ = 249384269 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 (249384211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7334815 + ... + 7334848.

It is an arithmetic number, because the mean of its divisors is an integer number (66013488).

Almost surely, 2^249384271 is an apocalyptic number.

249384271 is a deficient number, since it is larger than the sum of its proper divisors (14669681).

249384271 is a wasteful number, since it uses less digits than its factorization.

249384271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14669680.

The product of its digits is 96768, while the sum is 40.

The square root of 249384271 is about 15791.9052365444. The cubic root of 249384271 is about 629.4429198232.

The spelling of 249384271 in words is "two hundred forty-nine million, three hundred eighty-four thousand, two hundred seventy-one".