249395 has 8 divisors (see below), whose sum is σ = 309120. Its totient is φ = 192960.

The previous prime is 249383. The next prime is 249397. The reversal of 249395 is 593942.

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

It is not a de Polignac number, because 249395 - 2¹⁰ = 248371 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (249397) 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, 650 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (38640).

2²⁴⁹³⁹⁵ is an apocalyptic number.

249395 is a deficient number, since it is larger than the sum of its proper divisors (59725).

249395 is a wasteful number, since it uses less digits than its factorization.

249395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its digits is 9720, while the sum is 32.

The square root of 249395 is about 499.3946335314. The cubic root of 249395 is about 62.9451946316.

It can be divided in two parts, 2 and 49395, that multiplied together give a triangular number (98790 = T₄₄₄).

The spelling of 249395 in words is "two hundred forty-nine thousand, three hundred ninety-five".