974221243 has 2 divisors, whose sum is σ = 974221244. Its totient is φ = 974221242.

The previous prime is 974221223. The next prime is 974221247. The reversal of 974221243 is 342122479.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-974221243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 974221199 and 974221208.

It is not a weakly prime, because it can be changed into another prime (974221247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487110621 + 487110622.

It is an arithmetic number, because the mean of its divisors is an integer number (487110622).

Almost surely, 2^974221243 is an apocalyptic number.

974221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

974221243 is an equidigital number, since it uses as much as digits as its factorization.

974221243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 974221243 is about 31212.5174088858. The cubic root of 974221243 is about 991.3321667419.

The spelling of 974221243 in words is "nine hundred seventy-four million, two hundred twenty-one thousand, two hundred forty-three".