9999489 has 4 divisors (see below), whose sum is σ = 13332656. Its totient is φ = 6666324.

The previous prime is 9999481. The next prime is 9999511. The reversal of 9999489 is 9849999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 9999489 - 2³ = 9999481 is a prime.

It is a super-2 number, since 2×9999489² = 199979560522242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999481) 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, 1666579 + ... + 1666584.

It is an arithmetic number, because the mean of its divisors is an integer number (3333164).

Almost surely, 2^9999489 is an apocalyptic number.

It is an amenable number.

9999489 is a deficient number, since it is larger than the sum of its proper divisors (3333167).

9999489 is a wasteful number, since it uses less digits than its factorization.

9999489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333166.

The product of its digits is 1889568, while the sum is 57.

The square root of 9999489 is about 3162.1968629420. The cubic root of 9999489 is about 215.4397992203.

The spelling of 9999489 in words is "nine million, nine hundred ninety-nine thousand, four hundred eighty-nine".