249932117 has 2 divisors, whose sum is σ = 249932118. Its totient is φ = 249932116.

The previous prime is 249932093. The next prime is 249932131. The reversal of 249932117 is 711239942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235499716 + 14432401 = 15346^2 + 3799^2 .

It is a cyclic number.

It is not a de Polignac number, because 249932117 - 2²⁰ = 248883541 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 (249932197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124966058 + 124966059.

It is an arithmetic number, because the mean of its divisors is an integer number (124966059).

Almost surely, 2^249932117 is an apocalyptic number.

It is an amenable number.

249932117 is a deficient number, since it is larger than the sum of its proper divisors (1).

249932117 is an equidigital number, since it uses as much as digits as its factorization.

249932117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 249932117 is about 15809.2415061571. The cubic root of 249932117 is about 629.9035016388.

The spelling of 249932117 in words is "two hundred forty-nine million, nine hundred thirty-two thousand, one hundred seventeen".