43943793408 has 468 divisors, whose sum is σ = 146645737560. Its totient is φ = 13060694016.

The previous prime is 43943793407. The next prime is 43943793419. The reversal of 43943793408 is 80439734934.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43943793401) by changing a digit.

It is a polite number, since it can be written in 51 ways as a sum of consecutive naturals, for example, 2312831223 + ... + 2312831241.

Almost surely, 2^43943793408 is an apocalyptic number.

43943793408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43943793408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73322868780).

43943793408 is an abundant number, since it is smaller than the sum of its proper divisors (102701944152).

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

43943793408 is an frugal number, since it uses more digits than its factorization.

43943793408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 43943793408 in words is "forty-three billion, nine hundred forty-three million, seven hundred ninety-three thousand, four hundred eight".