1284966223 has 2 divisors, whose sum is σ = 1284966224. Its totient is φ = 1284966222.

The previous prime is 1284966211. The next prime is 1284966227. The reversal of 1284966223 is 3226694821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284966223 is a prime.

It is a super-2 number, since 2×1284966223² = 3302276388501771458, 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 1284966223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284966227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642483111 + 642483112.

It is an arithmetic number, because the mean of its divisors is an integer number (642483112).

Almost surely, 2^1284966223 is an apocalyptic number.

1284966223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284966223 is an equidigital number, since it uses as much as digits as its factorization.

1284966223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 1284966223 is about 35846.4255261246. The cubic root of 1284966223 is about 1087.1694431637.

The spelling of 1284966223 in words is "one billion, two hundred eighty-four million, nine hundred sixty-six thousand, two hundred twenty-three".