1339638 has 8 divisors (see below), whose sum is σ = 2679288. Its totient is φ = 446544.

The previous prime is 1339631. The next prime is 1339643. The reversal of 1339638 is 8369331.

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

1339638 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1339599 and 1339608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111631 + ... + 111642.

It is an arithmetic number, because the mean of its divisors is an integer number (334911).

2^1339638 is an apocalyptic number.

1339638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1339638 is a wasteful number, since it uses less digits than its factorization.

1339638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223278.

The product of its digits is 11664, while the sum is 33.

The square root of 1339638 is about 1157.4273195324. The cubic root of 1339638 is about 110.2374485020.

The spelling of 1339638 in words is "one million, three hundred thirty-nine thousand, six hundred thirty-eight".