1438039 has 4 divisors (see below), whose sum is σ = 1445760. Its totient is φ = 1430320.

The previous prime is 1438033. The next prime is 1438057. The reversal of 1438039 is 9308341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9308341 = 7 ⋅1329763.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1437998 and 1438016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3574 + ... + 3955.

It is an arithmetic number, because the mean of its divisors is an integer number (361440).

2^1438039 is an apocalyptic number.

1438039 is a deficient number, since it is larger than the sum of its proper divisors (7721).

1438039 is an equidigital number, since it uses as much as digits as its factorization.

1438039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7720.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1438039 is about 1199.1826382999. The cubic root of 1438039 is about 112.8730398556.

The spelling of 1438039 in words is "one million, four hundred thirty-eight thousand, thirty-nine".