1389850 has 72 divisors (see below), whose sum is σ = 3401568. Its totient is φ = 410400.

The previous prime is 1389841. The next prime is 1389851. The reversal of 1389850 is 589831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389851) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73141 + ... + 73159.

It is an arithmetic number, because the mean of its divisors is an integer number (47244).

2^1389850 is an apocalyptic number.

1389850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389850 is an abundant number, since it is smaller than the sum of its proper divisors (2011718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389850 is a wasteful number, since it uses less digits than its factorization.

1389850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1389850 is about 1178.9189963691. The cubic root of 1389850 is about 111.5978883907.

The spelling of 1389850 in words is "one million, three hundred eighty-nine thousand, eight hundred fifty".