249671 has 2 divisors, whose sum is σ = 249672. Its totient is φ = 249670.

The previous prime is 249659. The next prime is 249677. The reversal of 249671 is 176942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249671 - 2⁶ = 249607 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 4 + 6³ + 9³ + 7⁶ + 1 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124835 + 124836.

It is an arithmetic number, because the mean of its divisors is an integer number (124836).

2²⁴⁹⁶⁷¹ is an apocalyptic number.

249671 is a deficient number, since it is larger than the sum of its proper divisors (1).

249671 is an equidigital number, since it uses as much as digits as its factorization.

249671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 249671 is about 499.6708916877. The cubic root of 249671 is about 62.9684060953.

The spelling of 249671 in words is "two hundred forty-nine thousand, six hundred seventy-one".