1389926 has 16 divisors (see below), whose sum is σ = 2227200. Its totient is φ = 648648.

The previous prime is 1389919. The next prime is 1389943. The reversal of 1389926 is 6299831.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 1389926.

It is a congruent number.

It is an unprimeable number.

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, 2771 + ... + 3233.

It is an arithmetic number, because the mean of its divisors is an integer number (139200).

2^1389926 is an apocalyptic number.

1389926 is a deficient number, since it is larger than the sum of its proper divisors (837274).

1389926 is a wasteful number, since it uses less digits than its factorization.

1389926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its digits is 23328, while the sum is 38.

The square root of 1389926 is about 1178.9512288471. The cubic root of 1389926 is about 111.5999224915.

The spelling of 1389926 in words is "one million, three hundred eighty-nine thousand, nine hundred twenty-six".