1439136 has 72 divisors (see below), whose sum is σ = 4324320. Its totient is φ = 452736.

The previous prime is 1439129. The next prime is 1439147. The reversal of 1439136 is 6319341.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1439136² = 4142224852992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 4.

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 11 ways as a sum of consecutive naturals, for example, 5341 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2^1439136 is an apocalyptic number.

1439136 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 1439136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162160).

1439136 is an abundant number, since it is smaller than the sum of its proper divisors (2885184).

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

1439136 is a wasteful number, since it uses less digits than its factorization.

1439136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 287 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1439136 is about 1199.6399459838. The cubic root of 1439136 is about 112.9017340826.

The spelling of 1439136 in words is "one million, four hundred thirty-nine thousand, one hundred thirty-six".