961116749 has 2 divisors, whose sum is σ = 961116750. Its totient is φ = 961116748.

The previous prime is 961116733. The next prime is 961116757. The reversal of 961116749 is 947611169.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956355625 + 4761124 = 30925^2 + 2182^2 .

It is an emirp because it is prime and its reverse (947611169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961116749 - 2⁴ = 961116733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961116719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480558374 + 480558375.

It is an arithmetic number, because the mean of its divisors is an integer number (480558375).

Almost surely, 2^961116749 is an apocalyptic number.

It is an amenable number.

961116749 is a deficient number, since it is larger than the sum of its proper divisors (1).

961116749 is an equidigital number, since it uses as much as digits as its factorization.

961116749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 961116749 is about 31001.8829911991. The cubic root of 961116749 is about 986.8672009283.

The spelling of 961116749 in words is "nine hundred sixty-one million, one hundred sixteen thousand, seven hundred forty-nine".