1349273017 has 4 divisors (see below), whose sum is σ = 1428642036. Its totient is φ = 1269904000.

The previous prime is 1349272921. The next prime is 1349273027. The reversal of 1349273017 is 7103729431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 680740281 + 668532736 = 26091^2 + 25856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349273017 - 2¹⁹ = 1348748729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1349273027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39684484 + ... + 39684517.

It is an arithmetic number, because the mean of its divisors is an integer number (357160509).

Almost surely, 2^1349273017 is an apocalyptic number.

1349273017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1349273017 is a deficient number, since it is larger than the sum of its proper divisors (79369019).

1349273017 is an equidigital number, since it uses as much as digits as its factorization.

1349273017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79369018.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 1349273017 is about 36732.4518239662. The cubic root of 1349273017 is about 1105.0110266912.

The spelling of 1349273017 in words is "one billion, three hundred forty-nine million, two hundred seventy-three thousand, seventeen".