1139776217 has 2 divisors, whose sum is σ = 1139776218. Its totient is φ = 1139776216.

The previous prime is 1139776193. The next prime is 1139776249. The reversal of 1139776217 is 7126779311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1137308176 + 2468041 = 33724^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139776217 - 2¹⁰ = 1139775193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1139776717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569888108 + 569888109.

It is an arithmetic number, because the mean of its divisors is an integer number (569888109).

Almost surely, 2^1139776217 is an apocalyptic number.

It is an amenable number.

1139776217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139776217 is an equidigital number, since it uses as much as digits as its factorization.

1139776217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 44.

The square root of 1139776217 is about 33760.5719293972. The cubic root of 1139776217 is about 1044.5755675094.

The spelling of 1139776217 in words is "one billion, one hundred thirty-nine million, seven hundred seventy-six thousand, two hundred seventeen".