1339771217 has 2 divisors, whose sum is σ = 1339771218. Its totient is φ = 1339771216.

The previous prime is 1339771177. The next prime is 1339771247. The reversal of 1339771217 is 7121779331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875627281 + 464143936 = 29591^2 + 21544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1339771217 - 2¹⁶ = 1339705681 is a prime.

It is a super-2 number, since 2×1339771217² = 3589973827803322178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1339771247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669885608 + 669885609.

It is an arithmetic number, because the mean of its divisors is an integer number (669885609).

Almost surely, 2^1339771217 is an apocalyptic number.

It is an amenable number.

1339771217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339771217 is an equidigital number, since it uses as much as digits as its factorization.

1339771217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 41.

The square root of 1339771217 is about 36602.8853644081. The cubic root of 1339771217 is about 1102.4110247799.

The spelling of 1339771217 in words is "one billion, three hundred thirty-nine million, seven hundred seventy-one thousand, two hundred seventeen".