249252769 has 2 divisors, whose sum is σ = 249252770. Its totient is φ = 249252768.

The previous prime is 249252763. The next prime is 249252781. The reversal of 249252769 is 967252942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125776225 + 123476544 = 11215^2 + 11112^2 .

It is a cyclic number.

It is not a de Polignac number, because 249252769 - 2⁹ = 249252257 is a prime.

It is a super-2 number, since 2×249252769² = 124253885708334722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249252763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124626384 + 124626385.

It is an arithmetic number, because the mean of its divisors is an integer number (124626385).

Almost surely, 2^249252769 is an apocalyptic number.

It is an amenable number.

249252769 is a deficient number, since it is larger than the sum of its proper divisors (1).

249252769 is an equidigital number, since it uses as much as digits as its factorization.

249252769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 249252769 is about 15787.7410987133. The cubic root of 249252769 is about 629.3322638788.

The spelling of 249252769 in words is "two hundred forty-nine million, two hundred fifty-two thousand, seven hundred sixty-nine".