249475 has 12 divisors (see below), whose sum is σ = 328104. Its totient is φ = 187520.

The previous prime is 249463. The next prime is 249497. The reversal of 249475 is 574942.

It is a de Polignac number, because none of the positive numbers 2^k-249475 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 4 + 4² + 9³ + 7⁶ + 5 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132 + ... + 718.

It is an arithmetic number, because the mean of its divisors is an integer number (27342).

2²⁴⁹⁴⁷⁵ is an apocalyptic number.

249475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249475 is a deficient number, since it is larger than the sum of its proper divisors (78629).

249475 is a wasteful number, since it uses less digits than its factorization.

249475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 609 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 249475 is about 499.4747240852. The cubic root of 249475 is about 62.9519243539.

The spelling of 249475 in words is "two hundred forty-nine thousand, four hundred seventy-five".