9211880947 has 2 divisors, whose sum is σ = 9211880948. Its totient is φ = 9211880946.

The previous prime is 9211880939. The next prime is 9211880963. The reversal of 9211880947 is 7490881129.

It is a weak prime.

It is an emirp because it is prime and its reverse (7490881129) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9211880947 - 2³ = 9211880939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9211880947.

It is not a weakly prime, because it can be changed into another prime (9211880347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4605940473 + 4605940474.

It is an arithmetic number, because the mean of its divisors is an integer number (4605940474).

Almost surely, 2^9211880947 is an apocalyptic number.

9211880947 is a deficient number, since it is larger than the sum of its proper divisors (1).

9211880947 is an equidigital number, since it uses as much as digits as its factorization.

9211880947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 9211880947 is about 95978.5442012953. The cubic root of 9211880947 is about 2096.2807142862.

The spelling of 9211880947 in words is "nine billion, two hundred eleven million, eight hundred eighty thousand, nine hundred forty-seven".