1338439871 has 8 divisors (see below), whose sum is σ = 1386127200. Its totient is φ = 1290854880.

The previous prime is 1338439831. The next prime is 1338439877. The reversal of 1338439871 is 1789348331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1338439871 - 2⁶ = 1338439807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338439877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1541 + ... + 51761.

It is an arithmetic number, because the mean of its divisors is an integer number (173265900).

Almost surely, 2^1338439871 is an apocalyptic number.

1338439871 is a deficient number, since it is larger than the sum of its proper divisors (47687329).

1338439871 is an equidigital number, since it uses as much as digits as its factorization.

1338439871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51169.

The product of its digits is 435456, while the sum is 47.

The square root of 1338439871 is about 36584.6944910027. The cubic root of 1338439871 is about 1102.0457442724.

The spelling of 1338439871 in words is "one billion, three hundred thirty-eight million, four hundred thirty-nine thousand, eight hundred seventy-one".