249487 has 8 divisors (see below), whose sum is σ = 295200. Its totient is φ = 206304.

The previous prime is 249463. The next prime is 249497. The reversal of 249487 is 784942.

It is a happy number.

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

It is not a de Polignac number, because 249487 - 2¹¹ = 247439 is a prime.

It is a Duffinian number.

249487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (36900).

2²⁴⁹⁴⁸⁷ is an apocalyptic number.

249487 is a deficient number, since it is larger than the sum of its proper divisors (45713).

249487 is a wasteful number, since it uses less digits than its factorization.

249487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265.

The product of its digits is 16128, while the sum is 34.

The square root of 249487 is about 499.4867365606. The cubic root of 249487 is about 62.9529336881.

The spelling of 249487 in words is "two hundred forty-nine thousand, four hundred eighty-seven".