1338439307 has 4 divisors (see below), whose sum is σ = 1338883056. Its totient is φ = 1337995560.

The previous prime is 1338439273. The next prime is 1338439309. The reversal of 1338439307 is 7039348331.

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

It is a cyclic number.

It is not a de Polignac number, because 1338439307 - 2⁶ = 1338439243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338439309) 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 in 3 ways as a sum of consecutive naturals, for example, 217319 + ... + 223392.

It is an arithmetic number, because the mean of its divisors is an integer number (334720764).

Almost surely, 2^1338439307 is an apocalyptic number.

1338439307 is a deficient number, since it is larger than the sum of its proper divisors (443749).

1338439307 is an equidigital number, since it uses as much as digits as its factorization.

1338439307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443748.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 1338439307 is about 36584.6867828604. The cubic root of 1338439307 is about 1102.0455894767.

The spelling of 1338439307 in words is "one billion, three hundred thirty-eight million, four hundred thirty-nine thousand, three hundred seven".