4221582947 has 2 divisors, whose sum is σ = 4221582948. Its totient is φ = 4221582946.

The previous prime is 4221582929. The next prime is 4221582979. The reversal of 4221582947 is 7492851224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4221582947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4221582898 and 4221582907.

It is not a weakly prime, because it can be changed into another prime (4221582907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110791473 + 2110791474.

It is an arithmetic number, because the mean of its divisors is an integer number (2110791474).

Almost surely, 2^4221582947 is an apocalyptic number.

4221582947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221582947 is an equidigital number, since it uses as much as digits as its factorization.

4221582947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 4221582947 is about 64973.7096601387. The cubic root of 4221582947 is about 1616.1876195168.

The spelling of 4221582947 in words is "four billion, two hundred twenty-one million, five hundred eighty-two thousand, nine hundred forty-seven".