9489987 has 32 divisors (see below), whose sum is σ = 15948800. Its totient is φ = 5528736.

The previous prime is 9489979. The next prime is 9490001. The reversal of 9489987 is 7899849.

9489987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9489987 - 2³ = 9489979 is a prime.

It is a Duffinian number.

Its product of digits (1306368) is a multiple of the sum of its prime divisors (1458).

It is not an unprimeable number, because it can be changed into a prime (9489917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5958 + ... + 7380.

It is an arithmetic number, because the mean of its divisors is an integer number (498400).

Almost surely, 2^9489987 is an apocalyptic number.

9489987 is a deficient number, since it is larger than the sum of its proper divisors (6458813).

9489987 is a wasteful number, since it uses less digits than its factorization.

9489987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464 (or 1458 counting only the distinct ones).

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

The square root of 9489987 is about 3080.5822501599. The cubic root of 9489987 is about 211.7167437540.

The spelling of 9489987 in words is "nine million, four hundred eighty-nine thousand, nine hundred eighty-seven".