966947749 has 2 divisors, whose sum is σ = 966947750. Its totient is φ = 966947748.

The previous prime is 966947747. The next prime is 966947767. The reversal of 966947749 is 947749669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 928420900 + 38526849 = 30470^2 + 6207^2 .

It is an emirp because it is prime and its reverse (947749669) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 966947749 - 2¹ = 966947747 is a prime.

Together with 966947747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966947747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483473874 + 483473875.

It is an arithmetic number, because the mean of its divisors is an integer number (483473875).

Almost surely, 2^966947749 is an apocalyptic number.

It is an amenable number.

966947749 is a deficient number, since it is larger than the sum of its proper divisors (1).

966947749 is an equidigital number, since it uses as much as digits as its factorization.

966947749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 61.

The square root of 966947749 is about 31095.7834601413. The cubic root of 966947749 is about 988.8589203003.

The spelling of 966947749 in words is "nine hundred sixty-six million, nine hundred forty-seven thousand, seven hundred forty-nine".