1389696 has 128 divisors (see below), whose sum is σ = 4700160.
Its totient is φ = 353280.
The previous prime is 1389677. The next prime is 1389697. The reversal of 1389696 is 6969831.
1389696 = T81 + T82 + ... +
It is a tau number, because it is divible by the number of its divisors (128).
It is a Harshad number since it is a multiple of its sum of digits (42).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1389697) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29545 + ... + 29591.
It is an arithmetic number, because the mean of its divisors is an integer number (36720).
21389696 is an apocalyptic number.
1389696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1389696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2350080).
1389696 is an abundant number, since it is smaller than the sum of its proper divisors (3310464).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1389696 is a wasteful number, since it uses less digits than its factorization.
1389696 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 82 (or 70 counting only the distinct ones).
The product of its digits is 69984, while the sum is 42.
The square root of 1389696 is about 1178.8536804880.
The cubic root of 1389696 is about 111.5937664328.
The spelling of 1389696 in words is "one million, three hundred eighty-nine thousand, six hundred ninety-six".