1339689271 has 4 divisors (see below), whose sum is σ = 1343030544. Its totient is φ = 1336348000.

The previous prime is 1339689217. The next prime is 1339689277. The reversal of 1339689271 is 1729869331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1729869331 = 6367 ⋅271693.

It is a cyclic number.

It is not a de Polignac number, because 1339689271 - 2²¹ = 1337592119 is a prime.

It is a super-2 number, since 2×1339689271² = 3589534685665022882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339689277) 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 in 3 ways as a sum of consecutive naturals, for example, 1670035 + ... + 1670836.

It is an arithmetic number, because the mean of its divisors is an integer number (335757636).

Almost surely, 2^1339689271 is an apocalyptic number.

1339689271 is a deficient number, since it is larger than the sum of its proper divisors (3341273).

1339689271 is an equidigital number, since it uses as much as digits as its factorization.

1339689271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341272.

The product of its digits is 489888, while the sum is 49.

The square root of 1339689271 is about 36601.7659546640. The cubic root of 1339689271 is about 1102.3885483017.

The spelling of 1339689271 in words is "one billion, three hundred thirty-nine million, six hundred eighty-nine thousand, two hundred seventy-one".