8554993 has 2 divisors, whose sum is σ = 8554994. Its totient is φ = 8554992.

The previous prime is 8554981. The next prime is 8554999. The reversal of 8554993 is 3994558.

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., 7656289 + 898704 = 2767^2 + 948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8554993 is a prime.

It is not a weakly prime, because it can be changed into another prime (8554999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4277496 + 4277497.

It is an arithmetic number, because the mean of its divisors is an integer number (4277497).

Almost surely, 2^8554993 is an apocalyptic number.

It is an amenable number.

8554993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8554993 is an equidigital number, since it uses as much as digits as its factorization.

8554993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 8554993 is about 2924.8919638168. The cubic root of 8554993 is about 204.5219317985.

The spelling of 8554993 in words is "eight million, five hundred fifty-four thousand, nine hundred ninety-three".