9489731 has 6 divisors (see below), whose sum is σ = 9920820. Its totient is φ = 9076628.

The previous prime is 9489719. The next prime is 9489763. The reversal of 9489731 is 1379849.

It is a happy number.

It is not a de Polignac number, because 9489731 - 2¹⁸ = 9227587 is a prime.

It is a super-2 number, since 2×9489731² = 180109988904722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9489331) 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, 8441 + ... + 9498.

It is an arithmetic number, because the mean of its divisors is an integer number (1653470).

Almost surely, 2^9489731 is an apocalyptic number.

9489731 is a deficient number, since it is larger than the sum of its proper divisors (431089).

9489731 is a wasteful number, since it uses less digits than its factorization.

9489731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17985 (or 17962 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 9489731 is about 3080.5406992929. The cubic root of 9489731 is about 211.7148399940.

The spelling of 9489731 in words is "nine million, four hundred eighty-nine thousand, seven hundred thirty-one".