249284729 has 2 divisors, whose sum is σ = 249284730. Its totient is φ = 249284728.

The previous prime is 249284723. The next prime is 249284743. The reversal of 249284729 is 927482942.

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., 127690000 + 121594729 = 11300^2 + 11027^2 .

It is a cyclic number.

It is not a de Polignac number, because 249284729 - 2¹⁶ = 249219193 is a prime.

It is a super-2 number, since 2×249284729² = 124285752225206882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249284723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124642364 + 124642365.

It is an arithmetic number, because the mean of its divisors is an integer number (124642365).

Almost surely, 2^249284729 is an apocalyptic number.

It is an amenable number.

249284729 is a deficient number, since it is larger than the sum of its proper divisors (1).

249284729 is an equidigital number, since it uses as much as digits as its factorization.

249284729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 249284729 is about 15788.7532440025. The cubic root of 249284729 is about 629.3591610719.

The spelling of 249284729 in words is "two hundred forty-nine million, two hundred eighty-four thousand, seven hundred twenty-nine".