7961951 has 2 divisors, whose sum is σ = 7961952. Its totient is φ = 7961950.

The previous prime is 7961939. The next prime is 7961953. The reversal of 7961951 is 1591697.

It is a strong prime.

It is an emirp because it is prime and its reverse (1591697) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7961951 is a prime.

Together with 7961953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7961953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3980975 + 3980976.

It is an arithmetic number, because the mean of its divisors is an integer number (3980976).

Almost surely, 2^7961951 is an apocalyptic number.

7961951 is a deficient number, since it is larger than the sum of its proper divisors (1).

7961951 is an equidigital number, since it uses as much as digits as its factorization.

7961951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 38.

The square root of 7961951 is about 2821.6929315572. The cubic root of 7961951 is about 199.6824209848.

The spelling of 7961951 in words is "seven million, nine hundred sixty-one thousand, nine hundred fifty-one".