249734071 has 2 divisors, whose sum is σ = 249734072. Its totient is φ = 249734070.

The previous prime is 249734057. The next prime is 249734083. The reversal of 249734071 is 170437942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249734071 - 2⁹ = 249733559 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249734071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249734011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124867035 + 124867036.

It is an arithmetic number, because the mean of its divisors is an integer number (124867036).

Almost surely, 2^249734071 is an apocalyptic number.

249734071 is a deficient number, since it is larger than the sum of its proper divisors (1).

249734071 is an equidigital number, since it uses as much as digits as its factorization.

249734071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 249734071 is about 15802.9766499859. The cubic root of 249734071 is about 629.7370793379.

The spelling of 249734071 in words is "two hundred forty-nine million, seven hundred thirty-four thousand, seventy-one".