8993997 has 20 divisors (see below), whose sum is σ = 13803196. Its totient is φ = 5832000.

The previous prime is 8993981. The next prime is 8994017. The reversal of 8993997 is 7993998.

It is a happy number.

8993997 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6625476 + 2368521 = 2574^2 + 1539^2 .

It is not a de Polignac number, because 8993997 - 2⁴ = 8993981 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8993927) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1497 + ... + 4497.

Almost surely, 2^8993997 is an apocalyptic number.

It is an amenable number.

8993997 is a deficient number, since it is larger than the sum of its proper divisors (4809199).

8993997 is a wasteful number, since it uses less digits than its factorization.

8993997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050 (or 3041 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 8993997 is about 2998.9993331110. Note that the first 3 decimals coincide. The cubic root of 8993997 is about 207.9621248221.

Subtracting from 8993997 its reverse (7993998), we obtain a palindrome (999999).

The spelling of 8993997 in words is "eight million, nine hundred ninety-three thousand, nine hundred ninety-seven".