1249289617 has 2 divisors, whose sum is σ = 1249289618. Its totient is φ = 1249289616.

The previous prime is 1249289611. The next prime is 1249289623. The reversal of 1249289617 is 7169829421.

It is a balanced prime because it is at equal distance from previous prime (1249289611) and next prime (1249289623).

It can be written as a sum of positive squares in only one way, i.e., 1186182481 + 63107136 = 34441^2 + 7944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1249289617 is a prime.

It is a super-4 number, since 4×1249289617⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1249289611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624644808 + 624644809.

It is an arithmetic number, because the mean of its divisors is an integer number (624644809).

Almost surely, 2^1249289617 is an apocalyptic number.

It is an amenable number.

1249289617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249289617 is an equidigital number, since it uses as much as digits as its factorization.

1249289617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 1249289617 is about 35345.2912988421. The cubic root of 1249289617 is about 1077.0132431765.

The spelling of 1249289617 in words is "one billion, two hundred forty-nine million, two hundred eighty-nine thousand, six hundred seventeen".