440139324 has 24 divisors (see below), whose sum is σ = 1028256768. Its totient is φ = 146532400.

The previous prime is 440139319. The next prime is 440139353. The reversal of 440139324 is 423931044.

It is a junction number, because it is equal to n+sod(n) for n = 440139291 and 440139300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12252 + ... + 32099.

It is an arithmetic number, because the mean of its divisors is an integer number (42844032).

Almost surely, 2^440139324 is an apocalyptic number.

It is an amenable number.

440139324 is an abundant number, since it is smaller than the sum of its proper divisors (588117444).

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

440139324 is a wasteful number, since it uses less digits than its factorization.

440139324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45185 (or 45183 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 440139324 is about 20979.4977060939. The cubic root of 440139324 is about 760.6707628545.

The spelling of 440139324 in words is "four hundred forty million, one hundred thirty-nine thousand, three hundred twenty-four".