43349904 has 200 divisors, whose sum is σ = 141157632. Its totient is φ = 12752640.

The previous prime is 43349897. The next prime is 43349909. The reversal of 43349904 is 40994334.

43349904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (43349909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 522247 + ... + 522329.

Almost surely, 2^43349904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43349904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70578816).

43349904 is an abundant number, since it is smaller than the sum of its proper divisors (97807728).

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

43349904 is a wasteful number, since it uses less digits than its factorization.

43349904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 43349904 is about 6584.0643982270. The cubic root of 43349904 is about 351.2875137131.

It can be divided in two parts, 43349 and 904, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 43349904 in words is "forty-three million, three hundred forty-nine thousand, nine hundred four".