438425860440 has 32 divisors (see below), whose sum is σ = 1315277581680. Its totient is φ = 116913562752.

The previous prime is 438425860427. The next prime is 438425860507. The reversal of 438425860440 is 44068524834.

It is a self number, because there is not a number n which added to its sum of digits gives 438425860440.

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, 1826774299 + ... + 1826774538.

Almost surely, 2^438425860440 is an apocalyptic number.

438425860440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438425860440 is an abundant number, since it is smaller than the sum of its proper divisors (876851721240).

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

438425860440 is a wasteful number, since it uses less digits than its factorization.

438425860440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653548851 (or 3653548847 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 48.

The spelling of 438425860440 in words is "four hundred thirty-eight billion, four hundred twenty-five million, eight hundred sixty thousand, four hundred forty".