43929376440 has 128 divisors (see below), whose sum is σ = 134844860160. Its totient is φ = 11445801984.

The previous prime is 43929376433. The next prime is 43929376459. The reversal of 43929376440 is 4467392934.

It is a super-2 number, since 2×43929376440² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 913887 + ... + 960753.

It is an arithmetic number, because the mean of its divisors is an integer number (1053475470).

Almost surely, 2^43929376440 is an apocalyptic number.

43929376440 is a gapful number since it is divisible by the number (40) 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 43929376440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67422430080).

43929376440 is an abundant number, since it is smaller than the sum of its proper divisors (90915483720).

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

43929376440 is a wasteful number, since it uses less digits than its factorization.

43929376440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47061 (or 47057 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 43929376440 in words is "forty-three billion, nine hundred twenty-nine million, three hundred seventy-six thousand, four hundred forty".