9791272469 has 12 divisors (see below), whose sum is σ = 11037075840. Its totient is φ = 8614013400.

The previous prime is 9791272459. The next prime is 9791272471. The reversal of 9791272469 is 9642721979.

It is not a de Polignac number, because 9791272469 - 2⁴ = 9791272453 is a prime.

It is a super-2 number, since 2×9791272469² (a number of 21 digits) 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 (9791272409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 452549 + ... + 473690.

It is an arithmetic number, because the mean of its divisors is an integer number (919756320).

Almost surely, 2^9791272469 is an apocalyptic number.

It is an amenable number.

9791272469 is a deficient number, since it is larger than the sum of its proper divisors (1245803371).

9791272469 is a wasteful number, since it uses less digits than its factorization.

9791272469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926312 (or 926281 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 56.

The square root of 9791272469 is about 98950.8588593348. The cubic root of 9791272469 is about 2139.3395106259.

The spelling of 9791272469 in words is "nine billion, seven hundred ninety-one million, two hundred seventy-two thousand, four hundred sixty-nine".