249745267 has 2 divisors, whose sum is σ = 249745268. Its totient is φ = 249745266.

The previous prime is 249745259. The next prime is 249745313. The reversal of 249745267 is 762547942.

It is a happy number.

It is an a-pointer prime, because the next prime (249745313) can be obtained adding 249745267 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249745267 - 2³ = 249745259 is a prime.

It is not a weakly prime, because it can be changed into another prime (249745217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124872633 + 124872634.

It is an arithmetic number, because the mean of its divisors is an integer number (124872634).

Almost surely, 2^249745267 is an apocalyptic number.

249745267 is a deficient number, since it is larger than the sum of its proper divisors (1).

249745267 is an equidigital number, since it uses as much as digits as its factorization.

249745267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 249745267 is about 15803.3308830765. The cubic root of 249745267 is about 629.7464899227.

The spelling of 249745267 in words is "two hundred forty-nine million, seven hundred forty-five thousand, two hundred sixty-seven".