1389590 has 8 divisors (see below), whose sum is σ = 2501280. Its totient is φ = 555832.

The previous prime is 1389589. The next prime is 1389623. The reversal of 1389590 is 959831.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1389590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69470 + ... + 69489.

It is an arithmetic number, because the mean of its divisors is an integer number (312660).

2^1389590 is an apocalyptic number.

1389590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389590 is a deficient number, since it is larger than the sum of its proper divisors (1111690).

1389590 is a wasteful number, since it uses less digits than its factorization.

1389590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138966.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1389590 is about 1178.8087207007. The cubic root of 1389590 is about 111.5909290641.

The spelling of 1389590 in words is "one million, three hundred eighty-nine thousand, five hundred ninety".