249461 has 4 divisors (see below), whose sum is σ = 250572. Its totient is φ = 248352.

The previous prime is 249449. The next prime is 249463. The reversal of 249461 is 164942.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 164942 = 2 ⋅82471.

It can be written as a sum of positive squares in 2 ways, for example, as 42436 + 207025 = 206^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 249461 - 2⁶ = 249397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 249461.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249461.

It is not an unprimeable number, because it can be changed into a prime (249463) 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, 86 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (62643).

2²⁴⁹⁴⁶¹ is an apocalyptic number.

It is an amenable number.

249461 is a deficient number, since it is larger than the sum of its proper divisors (1111).

249461 is an equidigital number, since it uses as much as digits as its factorization.

249461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110.

The product of its digits is 1728, while the sum is 26.

The square root of 249461 is about 499.4607091654. The cubic root of 249461 is about 62.9507467563.

The spelling of 249461 in words is "two hundred forty-nine thousand, four hundred sixty-one".