8999487 has 18 divisors (see below), whose sum is σ = 15122328. Its totient is φ = 5142312.

The previous prime is 8999467. The next prime is 8999489. The reversal of 8999487 is 7849998.

8999487 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8999487 - 2⁶ = 8999423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999489) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9763 + ... + 10644.

Almost surely, 2^8999487 is an apocalyptic number.

8999487 is a deficient number, since it is larger than the sum of its proper divisors (6122841).

8999487 is a wasteful number, since it uses less digits than its factorization.

8999487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20427 (or 20417 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 8999487 is about 2999.9144987816. The cubic root of 8999487 is about 208.0044300708.

The spelling of 8999487 in words is "eight million, nine hundred ninety-nine thousand, four hundred eighty-seven".