8991093 has 4 divisors (see below), whose sum is σ = 11988128. Its totient is φ = 5994060.

The previous prime is 8991089. The next prime is 8991097. The reversal of 8991093 is 3901998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8991089) and next prime (8991097).

It is not a de Polignac number, because 8991093 - 2² = 8991089 is a prime.

It is a Duffinian number.

8991093 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1498513 + ... + 1498518.

It is an arithmetic number, because the mean of its divisors is an integer number (2997032).

Almost surely, 2^8991093 is an apocalyptic number.

It is an amenable number.

8991093 is a deficient number, since it is larger than the sum of its proper divisors (2997035).

8991093 is a wasteful number, since it uses less digits than its factorization.

8991093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997034.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 8991093 is about 2998.5151325281. The cubic root of 8991093 is about 207.9397400018.

The spelling of 8991093 in words is "eight million, nine hundred ninety-one thousand, ninety-three".