104440 has 32 divisors (see below), whose sum is σ = 269280. Its totient is φ = 35712.

The previous prime is 104417. The next prime is 104459. The reversal of 104440 is 44401.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 104440.

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, 94 + ... + 466.

It is an arithmetic number, because the mean of its divisors is an integer number (8415).

2¹⁰⁴⁴⁴⁰ is an apocalyptic number.

104440 is a gapful number since it is divisible by the number (10) 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 104440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134640).

104440 is an abundant number, since it is smaller than the sum of its proper divisors (164840).

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

104440 is a wasteful number, since it uses less digits than its factorization.

104440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 104440 is about 323.1717809463. The cubic root of 104440 is about 47.0929201422.

Adding to 104440 its reverse (44401), we get a palindrome (148841).

The spelling of 104440 in words is "one hundred four thousand, four hundred forty", and thus it is an iban number.