249389 has 8 divisors (see below), whose sum is σ = 297600. Its totient is φ = 204336.

The previous prime is 249383. The next prime is 249397. The reversal of 249389 is 983942.

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 249389 - 2⁸ = 249133 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 4⁸ + 3¹¹ + 9 + 8 + 9⁴ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614 + ... + 935.

It is an arithmetic number, because the mean of its divisors is an integer number (37200).

2²⁴⁹³⁸⁹ is an apocalyptic number.

It is an amenable number.

249389 is a deficient number, since it is larger than the sum of its proper divisors (48211).

249389 is a wasteful number, since it uses less digits than its factorization.

249389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579.

The product of its digits is 15552, while the sum is 35.

The square root of 249389 is about 499.3886262221. The cubic root of 249389 is about 62.9446898445.

The spelling of 249389 in words is "two hundred forty-nine thousand, three hundred eighty-nine".