1338629 has 4 divisors (see below), whose sum is σ = 1351020. Its totient is φ = 1326240.

The previous prime is 1338587. The next prime is 1338637. The reversal of 1338629 is 9268331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9268331 = 331 ⋅28001.

It can be written as a sum of positive squares in 2 ways, for example, as 1060900 + 277729 = 1030^2 + 527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338629 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1338595 and 1338604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338679) 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, 6032 + ... + 6249.

It is an arithmetic number, because the mean of its divisors is an integer number (337755).

2^1338629 is an apocalyptic number.

It is an amenable number.

1338629 is a deficient number, since it is larger than the sum of its proper divisors (12391).

1338629 is a wasteful number, since it uses less digits than its factorization.

1338629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12390.

The product of its digits is 7776, while the sum is 32.

The square root of 1338629 is about 1156.9913569254. The cubic root of 1338629 is about 110.2097650226.

The spelling of 1338629 in words is "one million, three hundred thirty-eight thousand, six hundred twenty-nine".