43864406 has 4 divisors (see below), whose sum is σ = 65796612. Its totient is φ = 21932202.

The previous prime is 43864397. The next prime is 43864417. The reversal of 43864406 is 60446834.

It is a happy number.

43864406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×43864406² = 3848172227465672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10966100 + ... + 10966103.

It is an arithmetic number, because the mean of its divisors is an integer number (16449153).

Almost surely, 2^43864406 is an apocalyptic number.

43864406 is a deficient number, since it is larger than the sum of its proper divisors (21932206).

43864406 is a wasteful number, since it uses less digits than its factorization.

43864406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21932205.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 43864406 is about 6623.0209119404. The cubic root of 43864406 is about 352.6718133634.

The spelling of 43864406 in words is "forty-three million, eight hundred sixty-four thousand, four hundred six".