249812 has 18 divisors (see below), whose sum is σ = 464058. Its totient is φ = 117648.

The previous prime is 249811. The next prime is 249827. The reversal of 249812 is 218942.

It can be written as a sum of positive squares in only one way, i.e., 244036 + 5776 = 494^2 + 76^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1358 + ... + 1530.

It is an arithmetic number, because the mean of its divisors is an integer number (25781).

2²⁴⁹⁸¹² is an apocalyptic number.

It is an amenable number.

249812 is a deficient number, since it is larger than the sum of its proper divisors (214246).

249812 is a wasteful number, since it uses less digits than its factorization.

249812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 194 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 249812 is about 499.8119646427. The cubic root of 249812 is about 62.9802575243.

The spelling of 249812 in words is "two hundred forty-nine thousand, eight hundred twelve".