974221247 has 2 divisors, whose sum is σ = 974221248. Its totient is φ = 974221246.

The previous prime is 974221243. The next prime is 974221271. The reversal of 974221247 is 742122479.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 974221247 - 2² = 974221243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 974221247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974221243) 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, 487110623 + 487110624.

It is an arithmetic number, because the mean of its divisors is an integer number (487110624).

Almost surely, 2^974221247 is an apocalyptic number.

974221247 is a deficient number, since it is larger than the sum of its proper divisors (1).

974221247 is an equidigital number, since it uses as much as digits as its factorization.

974221247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 38.

The square root of 974221247 is about 31212.5174729627. The cubic root of 974221247 is about 991.3321680987.

The spelling of 974221247 in words is "nine hundred seventy-four million, two hundred twenty-one thousand, two hundred forty-seven".