9071228491 has 8 divisors (see below), whose sum is σ = 9805335120. Its totient is φ = 8342310432.

The previous prime is 9071228477. The next prime is 9071228521. The reversal of 9071228491 is 1948221709.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9071228491 - 2¹³ = 9071220299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9071228461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293505 + ... + 1300498.

It is an arithmetic number, because the mean of its divisors is an integer number (1225666890).

Almost surely, 2^9071228491 is an apocalyptic number.

9071228491 is a deficient number, since it is larger than the sum of its proper divisors (734106629).

9071228491 is a wasteful number, since it uses less digits than its factorization.

9071228491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594285.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 9071228491 is about 95242.9970706508. The cubic root of 9071228491 is about 2085.5568629930.

The spelling of 9071228491 in words is "nine billion, seventy-one million, two hundred twenty-eight thousand, four hundred ninety-one".