9077891 has 2 divisors, whose sum is σ = 9077892. Its totient is φ = 9077890.

The previous prime is 9077869. The next prime is 9077903. The reversal of 9077891 is 1987709.

It is a strong prime.

It is an emirp because it is prime and its reverse (1987709) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9077891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9077821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4538945 + 4538946.

It is an arithmetic number, because the mean of its divisors is an integer number (4538946).

Almost surely, 2^9077891 is an apocalyptic number.

9077891 is a deficient number, since it is larger than the sum of its proper divisors (1).

9077891 is an equidigital number, since it uses as much as digits as its factorization.

9077891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 9077891 is about 3012.9538662250. The cubic root of 9077891 is about 208.6067328250.

The spelling of 9077891 in words is "nine million, seventy-seven thousand, eight hundred ninety-one".