972240911 has 2 divisors, whose sum is σ = 972240912. Its totient is φ = 972240910.

The previous prime is 972240833. The next prime is 972240917. The reversal of 972240911 is 119042279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972240911 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972240917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486120455 + 486120456.

It is an arithmetic number, because the mean of its divisors is an integer number (486120456).

Almost surely, 2^972240911 is an apocalyptic number.

972240911 is a deficient number, since it is larger than the sum of its proper divisors (1).

972240911 is an equidigital number, since it uses as much as digits as its factorization.

972240911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 972240911 is about 31180.7779088335. Note that the first 3 decimals coincide. The cubic root of 972240911 is about 990.6600064467.

The spelling of 972240911 in words is "nine hundred seventy-two million, two hundred forty thousand, nine hundred eleven".