44115939840 has 160 divisors (see below), whose sum is σ = 161180933760. Its totient is φ = 10083631104.

The previous prime is 44115939809. The next prime is 44115939841. The reversal of 44115939840 is 4893951144.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×44115939840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 44115939840.

It is not an unprimeable number, because it can be changed into a prime (44115939841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356545 + ... + 464064.

It is an arithmetic number, because the mean of its divisors is an integer number (1007380836).

Almost surely, 2^44115939840 is an apocalyptic number.

44115939840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44115939840 is an abundant number, since it is smaller than the sum of its proper divisors (117064993920).

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

44115939840 is an equidigital number, since it uses as much as digits as its factorization.

44115939840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820642 (or 820626 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 44115939840 in words is "forty-four billion, one hundred fifteen million, nine hundred thirty-nine thousand, eight hundred forty".