844426462440 has 64 divisors (see below), whose sum is σ = 2763577517760. Its totient is φ = 204709445120.

The previous prime is 844426462427. The next prime is 844426462459. The reversal of 844426462440 is 44264624448.

844426462440 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 844426462440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319857189 + ... + 319859828.

It is an arithmetic number, because the mean of its divisors is an integer number (43180898715).

Almost surely, 2^844426462440 is an apocalyptic number.

It is an amenable number.

844426462440 is an abundant number, since it is smaller than the sum of its proper divisors (1919151055320).

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

844426462440 is a wasteful number, since it uses less digits than its factorization.

844426462440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639717042 (or 639717038 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 48.

The spelling of 844426462440 in words is "eight hundred forty-four billion, four hundred twenty-six million, four hundred sixty-two thousand, four hundred forty".