8899997 has 2 divisors, whose sum is σ = 8899998. Its totient is φ = 8899996.

The previous prime is 8899987. The next prime is 8900029. The reversal of 8899997 is 7999988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4923961 + 3976036 = 2219^2 + 1994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8899997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8899927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4449998 + 4449999.

It is an arithmetic number, because the mean of its divisors is an integer number (4449999).

Almost surely, 2^8899997 is an apocalyptic number.

It is an amenable number.

8899997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8899997 is an equidigital number, since it uses as much as digits as its factorization.

8899997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 59.

The square root of 8899997 is about 2983.2862752341. The cubic root of 8899997 is about 207.2350865211.

Subtracting from 8899997 its reverse (7999988), we obtain a palindrome (900009).

The spelling of 8899997 in words is "eight million, eight hundred ninety-nine thousand, nine hundred ninety-seven".