249349189 has 4 divisors (see below), whose sum is σ = 250602400. Its totient is φ = 248095980.

The previous prime is 249349159. The next prime is 249349207. The reversal of 249349189 is 981943942.

249349189 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 249349189 - 2¹³ = 249340997 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 (249349109) 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, 626307 + ... + 626704.

It is an arithmetic number, because the mean of its divisors is an integer number (62650600).

Almost surely, 2^249349189 is an apocalyptic number.

It is an amenable number.

249349189 is a deficient number, since it is larger than the sum of its proper divisors (1253211).

249349189 is a wasteful number, since it uses less digits than its factorization.

249349189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253210.

The product of its digits is 559872, while the sum is 49.

The square root of 249349189 is about 15790.7944385329. The cubic root of 249349189 is about 629.4134029228.

The spelling of 249349189 in words is "two hundred forty-nine million, three hundred forty-nine thousand, one hundred eighty-nine".