41643966 has 48 divisors (see below), whose sum is σ = 103089024. Its totient is φ = 10981152.

The previous prime is 41643949. The next prime is 41643967. The reversal of 41643966 is 66934614.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41643967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4165 + ... + 10031.

It is an arithmetic number, because the mean of its divisors is an integer number (2147688).

Almost surely, 2^41643966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41643966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51544512).

41643966 is an abundant number, since it is smaller than the sum of its proper divisors (61445058).

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

41643966 is a wasteful number, since it uses less digits than its factorization.

41643966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905 (or 5892 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 41643966 is about 6453.2136180356. The cubic root of 41643966 is about 346.6176666855.

The spelling of 41643966 in words is "forty-one million, six hundred forty-three thousand, nine hundred sixty-six".