1389654 has 48 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 385920.

The previous prime is 1389643. The next prime is 1389667. The reversal of 1389654 is 4569831.

It is a super-2 number, since 2×1389654² = 3862276479432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5032 + ... + 5300.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2^1389654 is an apocalyptic number.

1389654 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 1389654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1769040).

1389654 is an abundant number, since it is smaller than the sum of its proper divisors (2148426).

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

1389654 is a wasteful number, since it uses less digits than its factorization.

1389654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 322 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1389654 is about 1178.8358664377. The cubic root of 1389654 is about 111.5926422096.

The spelling of 1389654 in words is "one million, three hundred eighty-nine thousand, six hundred fifty-four".