43697412 has 72 divisors (see below), whose sum is σ = 127606752. Its totient is φ = 12460800.

The previous prime is 43697389. The next prime is 43697413. The reversal of 43697412 is 21479634.

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 (43697413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3487 + ... + 9977.

It is an arithmetic number, because the mean of its divisors is an integer number (1772316).

Almost surely, 2^43697412 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 43697412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63803376).

43697412 is an abundant number, since it is smaller than the sum of its proper divisors (83909340).

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

43697412 is a wasteful number, since it uses less digits than its factorization.

43697412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529 (or 6524 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 43697412 is about 6610.4018032189. The cubic root of 43697412 is about 352.2236977709.

It can be divided in two parts, 4369 and 7412, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 43697412 in words is "forty-three million, six hundred ninety-seven thousand, four hundred twelve".