1489639 has 4 divisors (see below), whose sum is σ = 1492120. Its totient is φ = 1487160.

The previous prime is 1489637. The next prime is 1489661. The reversal of 1489639 is 9369841.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1489639 - 2¹ = 1489637 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 (1489633) 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, 292 + ... + 1750.

It is an arithmetic number, because the mean of its divisors is an integer number (373030).

2^1489639 is an apocalyptic number.

1489639 is a deficient number, since it is larger than the sum of its proper divisors (2481).

1489639 is a wasteful number, since it uses less digits than its factorization.

1489639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480.

The product of its digits is 46656, while the sum is 40.

The square root of 1489639 is about 1220.5076812540. The cubic root of 1489639 is about 114.2072509793.

The spelling of 1489639 in words is "one million, four hundred eighty-nine thousand, six hundred thirty-nine".