43489656 has 128 divisors (see below), whose sum is σ = 141120000. Its totient is φ = 12404448.

The previous prime is 43489631. The next prime is 43489657. The reversal of 43489656 is 65698434.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43489657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73795 + ... + 74381.

It is an arithmetic number, because the mean of its divisors is an integer number (1102500).

Almost surely, 2^43489656 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 43489656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70560000).

43489656 is an abundant number, since it is smaller than the sum of its proper divisors (97630344).

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

43489656 is a wasteful number, since it uses less digits than its factorization.

43489656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 599 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 43489656 is about 6594.6687558967. The cubic root of 43489656 is about 351.6646039076.

The spelling of 43489656 in words is "forty-three million, four hundred eighty-nine thousand, six hundred fifty-six".