1344697217 has 2 divisors, whose sum is σ = 1344697218. Its totient is φ = 1344697216.

The previous prime is 1344697183. The next prime is 1344697223. The reversal of 1344697217 is 7127964431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1339852816 + 4844401 = 36604^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344697217 - 2¹² = 1344693121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344697267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672348608 + 672348609.

It is an arithmetic number, because the mean of its divisors is an integer number (672348609).

Almost surely, 2^1344697217 is an apocalyptic number.

It is an amenable number.

1344697217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344697217 is an equidigital number, since it uses as much as digits as its factorization.

1344697217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 1344697217 is about 36670.1134031516. The cubic root of 1344697217 is about 1103.7604678052.

The spelling of 1344697217 in words is "one billion, three hundred forty-four million, six hundred ninety-seven thousand, two hundred seventeen".