43894101440 has 112 divisors (see below), whose sum is σ = 122368446144. Its totient is φ = 14682316800.

The previous prime is 43894101389. The next prime is 43894101443. The reversal of 43894101440 is 4410149834.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 43894101394 and 43894101403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43894101443) 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, 147131 + ... + 330810.

It is an arithmetic number, because the mean of its divisors is an integer number (1092575412).

Almost surely, 2^43894101440 is an apocalyptic number.

43894101440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43894101440 is an abundant number, since it is smaller than the sum of its proper divisors (78474344704).

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

43894101440 is a wasteful number, since it uses less digits than its factorization.

43894101440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478006 (or 477996 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 43894101440 in words is "forty-three billion, eight hundred ninety-four million, one hundred one thousand, four hundred forty".