440481923 has 18 divisors (see below), whose sum is σ = 517253796. Its totient is φ = 374003784.

The previous prime is 440481911. The next prime is 440481931. The reversal of 440481923 is 329184044.

It is not a de Polignac number, because 440481923 - 2²⁴ = 423704707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440481323) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 1940336 + ... + 1940562.

It is an arithmetic number, because the mean of its divisors is an integer number (28736322).

Almost surely, 2^440481923 is an apocalyptic number.

440481923 is a deficient number, since it is larger than the sum of its proper divisors (76771873).

440481923 is an equidigital number, since it uses as much as digits as its factorization.

440481923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 440481923 is about 20987.6612084339. The cubic root of 440481923 is about 760.8680772354.

The spelling of 440481923 in words is "four hundred forty million, four hundred eighty-one thousand, nine hundred twenty-three".