969821113 has 2 divisors, whose sum is σ = 969821114. Its totient is φ = 969821112.

The previous prime is 969821087. The next prime is 969821119. The reversal of 969821113 is 311128969.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501401664 + 468419449 = 22392^2 + 21643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969821113 is a prime.

It is not a weakly prime, because it can be changed into another prime (969821119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484910556 + 484910557.

It is an arithmetic number, because the mean of its divisors is an integer number (484910557).

Almost surely, 2^969821113 is an apocalyptic number.

It is an amenable number.

969821113 is a deficient number, since it is larger than the sum of its proper divisors (1).

969821113 is an equidigital number, since it uses as much as digits as its factorization.

969821113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 40.

The square root of 969821113 is about 31141.9510146683. The cubic root of 969821113 is about 989.8374432959.

The spelling of 969821113 in words is "nine hundred sixty-nine million, eight hundred twenty-one thousand, one hundred thirteen".