43690044 has 48 divisors (see below), whose sum is σ = 110230400. Its totient is φ = 13421376.

The previous prime is 43690043. The next prime is 43690079. The reversal of 43690044 is 44009634.

It is a junction number, because it is equal to n+sod(n) for n = 43689993 and 43690020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43690043) 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, 5847 + ... + 11025.

Almost surely, 2^43690044 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 43690044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55115200).

43690044 is an abundant number, since it is smaller than the sum of its proper divisors (66540356).

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

43690044 is a wasteful number, since it uses less digits than its factorization.

43690044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242 (or 5240 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 43690044 is about 6609.8444762339. The cubic root of 43690044 is about 352.2039000304.

Adding to 43690044 its reverse (44009634), we get a palindrome (87699678).

The spelling of 43690044 in words is "forty-three million, six hundred ninety thousand, forty-four".