972116843 has 2 divisors, whose sum is σ = 972116844. Its totient is φ = 972116842.

The previous prime is 972116807. The next prime is 972116851. The reversal of 972116843 is 348611279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 972116843 - 2¹⁶ = 972051307 is a prime.

It is a super-2 number, since 2×972116843² = 1890022312888573298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 972116843.

It is not a weakly prime, because it can be changed into another prime (972116143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486058421 + 486058422.

It is an arithmetic number, because the mean of its divisors is an integer number (486058422).

Almost surely, 2^972116843 is an apocalyptic number.

972116843 is a deficient number, since it is larger than the sum of its proper divisors (1).

972116843 is an equidigital number, since it uses as much as digits as its factorization.

972116843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 972116843 is about 31178.7883504154. The cubic root of 972116843 is about 990.6178651650.

The spelling of 972116843 in words is "nine hundred seventy-two million, one hundred sixteen thousand, eight hundred forty-three".