249066071 has 2 divisors, whose sum is σ = 249066072. Its totient is φ = 249066070.

The previous prime is 249066053. The next prime is 249066131. The reversal of 249066071 is 170660942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249066071 - 2¹⁴ = 249049687 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 (249066271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124533035 + 124533036.

It is an arithmetic number, because the mean of its divisors is an integer number (124533036).

Almost surely, 2^249066071 is an apocalyptic number.

249066071 is a deficient number, since it is larger than the sum of its proper divisors (1).

249066071 is an equidigital number, since it uses as much as digits as its factorization.

249066071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 249066071 is about 15781.8272389480. The cubic root of 249066071 is about 629.1750948820.

The spelling of 249066071 in words is "two hundred forty-nine million, sixty-six thousand, seventy-one".