440041968 has 30 divisors (see below), whose sum is σ = 1231506744. Its totient is φ = 146680608.

The previous prime is 440041967. The next prime is 440041981. The reversal of 440041968 is 869140044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440041961) 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 5 ways as a sum of consecutive naturals, for example, 1527780 + ... + 1528067.

Almost surely, 2^440041968 is an apocalyptic number.

440041968 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

440041968 is an abundant number, since it is smaller than the sum of its proper divisors (791464776).

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

440041968 is a wasteful number, since it uses less digits than its factorization.

440041968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055861 (or 3055852 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 440041968 is about 20977.1773124985. The cubic root of 440041968 is about 760.6146735515.

The spelling of 440041968 in words is "four hundred forty million, forty-one thousand, nine hundred sixty-eight".