9225309491 has 4 divisors (see below), whose sum is σ = 9306949512. Its totient is φ = 9143669472.

The previous prime is 9225309473. The next prime is 9225309517. The reversal of 9225309491 is 1949035229.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9225309491 - 2¹⁸ = 9225047347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9225309421) 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, 40819841 + ... + 40820066.

It is an arithmetic number, because the mean of its divisors is an integer number (2326737378).

Almost surely, 2^9225309491 is an apocalyptic number.

9225309491 is a deficient number, since it is larger than the sum of its proper divisors (81640021).

9225309491 is a wasteful number, since it uses less digits than its factorization.

9225309491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81640020.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 9225309491 is about 96048.4746937712. The cubic root of 9225309491 is about 2097.2988317427.

The spelling of 9225309491 in words is "nine billion, two hundred twenty-five million, three hundred nine thousand, four hundred ninety-one".