8896991 has 2 divisors, whose sum is σ = 8896992. Its totient is φ = 8896990.

The previous prime is 8896981. The next prime is 8897011. The reversal of 8896991 is 1996988.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8896991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8896931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4448495 + 4448496.

It is an arithmetic number, because the mean of its divisors is an integer number (4448496).

Almost surely, 2^8896991 is an apocalyptic number.

8896991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8896991 is an equidigital number, since it uses as much as digits as its factorization.

8896991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 50.

The square root of 8896991 is about 2982.7824258568. The cubic root of 8896991 is about 207.2117524751.

It can be divided in two parts, 88 and 96991, that added together give a palindrome (97079).

The spelling of 8896991 in words is "eight million, eight hundred ninety-six thousand, nine hundred ninety-one".