7896667091 has 2 divisors, whose sum is σ = 7896667092. Its totient is φ = 7896667090.

The previous prime is 7896667039. The next prime is 7896667139. The reversal of 7896667091 is 1907666987.

It is a strong prime.

It is an emirp because it is prime and its reverse (1907666987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7896667091 - 2¹⁰ = 7896666067 is a prime.

It is a super-2 number, since 2×7896667091² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7896667091.

It is not a weakly prime, because it can be changed into another prime (7896627091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948333545 + 3948333546.

It is an arithmetic number, because the mean of its divisors is an integer number (3948333546).

Almost surely, 2^7896667091 is an apocalyptic number.

7896667091 is a deficient number, since it is larger than the sum of its proper divisors (1).

7896667091 is an equidigital number, since it uses as much as digits as its factorization.

7896667091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 7896667091 is about 88863.1931172856. The cubic root of 7896667091 is about 1991.3515805757.

The spelling of 7896667091 in words is "seven billion, eight hundred ninety-six million, six hundred sixty-seven thousand, ninety-one".