439375987640 has 32 divisors (see below), whose sum is σ = 988615666080. Its totient is φ = 175746893952.

The previous prime is 439375987597. The next prime is 439375987657. The reversal of 439375987640 is 46789573934.

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, 3049874 + ... + 3190686.

It is an arithmetic number, because the mean of its divisors is an integer number (30894239565).

Almost surely, 2^439375987640 is an apocalyptic number.

439375987640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

439375987640 is an abundant number, since it is smaller than the sum of its proper divisors (549239678440).

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

439375987640 is a wasteful number, since it uses less digits than its factorization.

439375987640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218831 (or 218827 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 65.

The spelling of 439375987640 in words is "four hundred thirty-nine billion, three hundred seventy-five million, nine hundred eighty-seven thousand, six hundred forty".