8765624249 has 2 divisors, whose sum is σ = 8765624250. Its totient is φ = 8765624248.

The previous prime is 8765624227. The next prime is 8765624291. The reversal of 8765624249 is 9424265678.

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., 7446481849 + 1319142400 = 86293^2 + 36320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8765624249 is a prime.

It is a super-3 number, since 3×8765624249³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8765624249.

It is not a weakly prime, because it can be changed into another prime (8765624149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4382812124 + 4382812125.

It is an arithmetic number, because the mean of its divisors is an integer number (4382812125).

Almost surely, 2^8765624249 is an apocalyptic number.

It is an amenable number.

8765624249 is a deficient number, since it is larger than the sum of its proper divisors (1).

8765624249 is an equidigital number, since it uses as much as digits as its factorization.

8765624249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 53.

The square root of 8765624249 is about 93624.9125446855. The cubic root of 8765624249 is about 2061.8684346467.

The spelling of 8765624249 in words is "eight billion, seven hundred sixty-five million, six hundred twenty-four thousand, two hundred forty-nine".