43406164 has 12 divisors (see below), whose sum is σ = 76713588. Its totient is φ = 21488000.

The previous prime is 43406159. The next prime is 43406189. The reversal of 43406164 is 46160434.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39162564 + 4243600 = 6258^2 + 2060^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53317 + ... + 54124.

It is an arithmetic number, because the mean of its divisors is an integer number (6392799).

Almost surely, 2^43406164 is an apocalyptic number.

It is an amenable number.

43406164 is a deficient number, since it is larger than the sum of its proper divisors (33307424).

43406164 is a wasteful number, since it uses less digits than its factorization.

43406164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107546 (or 107544 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 43406164 is about 6588.3354498690. The cubic root of 43406164 is about 351.4394163328.

Adding to 43406164 its reverse (46160434), we get a palindrome (89566598).

The spelling of 43406164 in words is "forty-three million, four hundred six thousand, one hundred sixty-four".