8997147 has 6 divisors (see below), whose sum is σ = 12995892. Its totient is φ = 5998092.

The previous prime is 8997139. The next prime is 8997167. The reversal of 8997147 is 7417998.

It is not a de Polignac number, because 8997147 - 2³ = 8997139 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8997167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 499833 + ... + 499850.

It is an arithmetic number, because the mean of its divisors is an integer number (2165982).

Almost surely, 2^8997147 is an apocalyptic number.

8997147 is a deficient number, since it is larger than the sum of its proper divisors (3998745).

8997147 is a wasteful number, since it uses less digits than its factorization.

8997147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999689 (or 999686 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 8997147 is about 2999.5244623107. The cubic root of 8997147 is about 207.9864004299.

The spelling of 8997147 in words is "eight million, nine hundred ninety-seven thousand, one hundred forty-seven".