1344888817 has 2 divisors, whose sum is σ = 1344888818. Its totient is φ = 1344888816.

The previous prime is 1344888803. The next prime is 1344888827. The reversal of 1344888817 is 7188884431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971007921 + 373880896 = 31161^2 + 19336^2 .

It is an emirp because it is prime and its reverse (7188884431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1344888817 - 2⁷ = 1344888689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344888827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672444408 + 672444409.

It is an arithmetic number, because the mean of its divisors is an integer number (672444409).

Almost surely, 2^1344888817 is an apocalyptic number.

It is an amenable number.

1344888817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344888817 is an equidigital number, since it uses as much as digits as its factorization.

1344888817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1376256, while the sum is 52.

The square root of 1344888817 is about 36672.7257917925. The cubic root of 1344888817 is about 1103.8128886425.

The spelling of 1344888817 in words is "one billion, three hundred forty-four million, eight hundred eighty-eight thousand, eight hundred seventeen".