44259289840 has 40 divisors (see below), whose sum is σ = 103183306560. Its totient is φ = 17655465216.

The previous prime is 44259289813. The next prime is 44259289843. The reversal of 44259289840 is 4898295244.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×44259289840² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44259289843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724375 + ... + 783094.

It is an arithmetic number, because the mean of its divisors is an integer number (2579582664).

Almost surely, 2^44259289840 is an apocalyptic number.

44259289840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44259289840 is an abundant number, since it is smaller than the sum of its proper divisors (58924016720).

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

44259289840 is a wasteful number, since it uses less digits than its factorization.

44259289840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507849 (or 1507843 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 44259289840 in words is "forty-four billion, two hundred fifty-nine million, two hundred eighty-nine thousand, eight hundred forty".