7969961 has 2 divisors, whose sum is σ = 7969962. Its totient is φ = 7969960.

The previous prime is 7969943. The next prime is 7969967. The reversal of 7969961 is 1699697.

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., 7123561 + 846400 = 2669^2 + 920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7969961 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7969967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3984980 + 3984981.

It is an arithmetic number, because the mean of its divisors is an integer number (3984981).

Almost surely, 2^7969961 is an apocalyptic number.

It is an amenable number.

7969961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7969961 is an equidigital number, since it uses as much as digits as its factorization.

7969961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 47.

The square root of 7969961 is about 2823.1119354358. Note that the first 3 decimals coincide. The cubic root of 7969961 is about 199.7493610317.

The spelling of 7969961 in words is "seven million, nine hundred sixty-nine thousand, nine hundred sixty-one".