1381039 has 8 divisors (see below), whose sum is σ = 1516032. Its totient is φ = 1247640.

The previous prime is 1381033. The next prime is 1381043. The reversal of 1381039 is 9301831.

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 1381039 - 2¹⁵ = 1348271 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 (1381033) 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 7 ways as a sum of consecutive naturals, for example, 2172 + ... + 2734.

It is an arithmetic number, because the mean of its divisors is an integer number (189504).

2^1381039 is an apocalyptic number.

1381039 is a deficient number, since it is larger than the sum of its proper divisors (134993).

1381039 is a wasteful number, since it uses less digits than its factorization.

1381039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1381039 is about 1175.1761570080. The cubic root of 1381039 is about 111.3615621185.

The spelling of 1381039 in words is "one million, three hundred eighty-one thousand, thirty-nine".