440342540 has 48 divisors (see below), whose sum is σ = 1011999744. Its totient is φ = 159614400.

The previous prime is 440342533. The next prime is 440342543. The reversal of 440342540 is 45243044.

It is not an unprimeable number, because it can be changed into a prime (440342543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69797 + ... + 75843.

It is an arithmetic number, because the mean of its divisors is an integer number (21083328).

Almost surely, 2^440342540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440342540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505999872).

440342540 is an abundant number, since it is smaller than the sum of its proper divisors (571657204).

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

440342540 is a wasteful number, since it uses less digits than its factorization.

440342540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6398 (or 6396 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 440342540 is about 20984.3403517957. The cubic root of 440342540 is about 760.7878141888.

Adding to 440342540 its reverse (45243044), we get a palindrome (485585584).

The spelling of 440342540 in words is "four hundred forty million, three hundred forty-two thousand, five hundred forty".