9009431 has 4 divisors (see below), whose sum is σ = 9030672. Its totient is φ = 8988192.

The previous prime is 9009419. The next prime is 9009443. The reversal of 9009431 is 1349009.

It is a happy number.

9009431 is digitally balanced in base 2, because in such base 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: 1349009 = 53 ⋅25453.

It is an interprime number because it is at equal distance from previous prime (9009419) and next prime (9009443).

It is a cyclic number.

It is not a de Polignac number, because 9009431 - 2⁶ = 9009367 is a prime.

It is a super-2 number, since 2×9009431² = 162339693887522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9009431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9009331) 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, 9971 + ... + 10836.

It is an arithmetic number, because the mean of its divisors is an integer number (2257668).

Almost surely, 2^9009431 is an apocalyptic number.

9009431 is a deficient number, since it is larger than the sum of its proper divisors (21241).

9009431 is a wasteful number, since it uses less digits than its factorization.

9009431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21240.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 9009431 is about 3001.5714217723. The cubic root of 9009431 is about 208.0810134988.

The spelling of 9009431 in words is "nine million, nine thousand, four hundred thirty-one".