249448729 has 2 divisors, whose sum is σ = 249448730. Its totient is φ = 249448728.

The previous prime is 249448721. The next prime is 249448763. The reversal of 249448729 is 927844942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223203600 + 26245129 = 14940^2 + 5123^2 .

It is a cyclic number.

It is not a de Polignac number, because 249448729 - 2³ = 249448721 is a prime.

It is a super-3 number, since 3×249448729³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (249448721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124724364 + 124724365.

It is an arithmetic number, because the mean of its divisors is an integer number (124724365).

Almost surely, 2^249448729 is an apocalyptic number.

It is an amenable number.

249448729 is a deficient number, since it is larger than the sum of its proper divisors (1).

249448729 is an equidigital number, since it uses as much as digits as its factorization.

249448729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 249448729 is about 15793.9459603989. The cubic root of 249448729 is about 629.4971455588.

The spelling of 249448729 in words is "two hundred forty-nine million, four hundred forty-eight thousand, seven hundred twenty-nine".