1226993 has 2 divisors, whose sum is σ = 1226994. Its totient is φ = 1226992.

The previous prime is 1226983. The next prime is 1227047. The reversal of 1226993 is 3996221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 559504 = 817^2 + 748^2 .

It is an emirp because it is prime and its reverse (3996221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226993 - 2⁴ = 1226977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613496 + 613497.

It is an arithmetic number, because the mean of its divisors is an integer number (613497).

2^1226993 is an apocalyptic number.

It is an amenable number.

1226993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226993 is an equidigital number, since it uses as much as digits as its factorization.

1226993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 1226993 is about 1107.6971607800. The cubic root of 1226993 is about 107.0567434203.

Subtracting from 1226993 its sum of digits (32), we obtain a triangular number (1226961 = T₁₅₆₆).

The spelling of 1226993 in words is "one million, two hundred twenty-six thousand, nine hundred ninety-three".