1383639 has 8 divisors (see below), whose sum is σ = 1852032. Its totient is φ = 918840.

The previous prime is 1383607. The next prime is 1383653. The reversal of 1383639 is 9363831.

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

It is not a de Polignac number, because 1383639 - 2⁵ = 1383607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (231504).

2^1383639 is an apocalyptic number.

1383639 is a deficient number, since it is larger than the sum of its proper divisors (468393).

1383639 is a wasteful number, since it uses less digits than its factorization.

1383639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797.

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

The square root of 1383639 is about 1176.2818539789. The cubic root of 1383639 is about 111.4314029054.

The spelling of 1383639 in words is "one million, three hundred eighty-three thousand, six hundred thirty-nine".