8887997 has 4 divisors (see below), whose sum is σ = 8897436. Its totient is φ = 8878560.

The previous prime is 8887981. The next prime is 8888003. The reversal of 8887997 is 7997888.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3407716 + 5480281 = 1846^2 + 2341^2 .

It is a cyclic number.

It is not a de Polignac number, because 8887997 - 2⁴ = 8887981 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8887397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3128 + ... + 5249.

It is an arithmetic number, because the mean of its divisors is an integer number (2224359).

Almost surely, 2^8887997 is an apocalyptic number.

It is an amenable number.

8887997 is a deficient number, since it is larger than the sum of its proper divisors (9439).

8887997 is a wasteful number, since it uses less digits than its factorization.

8887997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9438.

The product of its digits is 2032128, while the sum is 56.

The square root of 8887997 is about 2981.2743919338. The cubic root of 8887997 is about 207.1419052332.

The spelling of 8887997 in words is "eight million, eight hundred eighty-seven thousand, nine hundred ninety-seven".