249727 has 2 divisors, whose sum is σ = 249728. Its totient is φ = 249726.

The previous prime is 249721. The next prime is 249737. The reversal of 249727 is 727942.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124863 + 124864.

It is an arithmetic number, because the mean of its divisors is an integer number (124864).

2²⁴⁹⁷²⁷ is an apocalyptic number.

249727 is a deficient number, since it is larger than the sum of its proper divisors (1).

249727 is an equidigital number, since it uses as much as digits as its factorization.

249727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 249727 is about 499.7269254303. The cubic root of 249727 is about 62.9731135798.

It can be divided in two parts, 2 and 49727, that added together give a square (49729 = 223²).

The spelling of 249727 in words is "two hundred forty-nine thousand, seven hundred twenty-seven".