1389234 has 64 divisors (see below), whose sum is σ = 3612672. Its totient is φ = 345600.

The previous prime is 1389233. The next prime is 1389251. The reversal of 1389234 is 4329831.

It is a super-2 number, since 2×1389234² = 3859942213512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14274 + ... + 14370.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2^1389234 is an apocalyptic number.

1389234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806336).

1389234 is an abundant number, since it is smaller than the sum of its proper divisors (2223438).

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

1389234 is a wasteful number, since it uses less digits than its factorization.

1389234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151.

The product of its digits is 5184, while the sum is 30.

The square root of 1389234 is about 1178.6577111274. The cubic root of 1389234 is about 111.5813987317.

The spelling of 1389234 in words is "one million, three hundred eighty-nine thousand, two hundred thirty-four".