9471989 has 4 divisors (see below), whose sum is σ = 9488556. Its totient is φ = 9455424.

The previous prime is 9471977. The next prime is 9472007. The reversal of 9471989 is 9891749.

9471989 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9891749 = 7 ⋅1413107.

It can be written as a sum of positive squares in 2 ways, for example, as 6461764 + 3010225 = 2542^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 9471989 - 2⁸ = 9471733 is a prime.

It is a super-2 number, since 2×9471989² = 179437151232242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9471949) 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, 7394 + ... + 8579.

It is an arithmetic number, because the mean of its divisors is an integer number (2372139).

Almost surely, 2^9471989 is an apocalyptic number.

It is an amenable number.

9471989 is a deficient number, since it is larger than the sum of its proper divisors (16567).

9471989 is a wasteful number, since it uses less digits than its factorization.

9471989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16566.

The product of its digits is 163296, while the sum is 47.

The square root of 9471989 is about 3077.6596627957. The cubic root of 9471989 is about 211.5828170028.

The spelling of 9471989 in words is "nine million, four hundred seventy-one thousand, nine hundred eighty-nine".