249123289 has 2 divisors, whose sum is σ = 249123290. Its totient is φ = 249123288.

The previous prime is 249123283. The next prime is 249123293. The reversal of 249123289 is 982321942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154878025 + 94245264 = 12445^2 + 9708^2 .

It is a cyclic number.

It is not a de Polignac number, because 249123289 - 2¹¹ = 249121241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249123283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124561644 + 124561645.

It is an arithmetic number, because the mean of its divisors is an integer number (124561645).

Almost surely, 2^249123289 is an apocalyptic number.

It is an amenable number.

249123289 is a deficient number, since it is larger than the sum of its proper divisors (1).

249123289 is an equidigital number, since it uses as much as digits as its factorization.

249123289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 249123289 is about 15783.6399160650. The cubic root of 249123289 is about 629.2232713678.

The spelling of 249123289 in words is "two hundred forty-nine million, one hundred twenty-three thousand, two hundred eighty-nine".