974288891 has 2 divisors, whose sum is σ = 974288892. Its totient is φ = 974288890.

The previous prime is 974288873. The next prime is 974288927. The reversal of 974288891 is 198882479.

It is a weak prime.

It is an emirp because it is prime and its reverse (198882479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 974288891 - 2⁶ = 974288827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (974288831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487144445 + 487144446.

It is an arithmetic number, because the mean of its divisors is an integer number (487144446).

Almost surely, 2^974288891 is an apocalyptic number.

974288891 is a deficient number, since it is larger than the sum of its proper divisors (1).

974288891 is an equidigital number, since it uses as much as digits as its factorization.

974288891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 56.

The square root of 974288891 is about 31213.6010578722. The cubic root of 974288891 is about 991.3551115937.

The spelling of 974288891 in words is "nine hundred seventy-four million, two hundred eighty-eight thousand, eight hundred ninety-one".