1389706 has 8 divisors (see below), whose sum is σ = 2175264. Its totient is φ = 664620.

The previous prime is 1389697. The next prime is 1389727. The reversal of 1389706 is 6079831.

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

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, 15060 + ... + 15151.

It is an arithmetic number, because the mean of its divisors is an integer number (271908).

2^1389706 is an apocalyptic number.

1389706 is a deficient number, since it is larger than the sum of its proper divisors (785558).

1389706 is a wasteful number, since it uses less digits than its factorization.

1389706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30236.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1389706 is about 1178.8579218888. The cubic root of 1389706 is about 111.5940341017.

The spelling of 1389706 in words is "one million, three hundred eighty-nine thousand, seven hundred six".