43406604 has 36 divisors (see below), whose sum is σ = 113788584. Its totient is φ = 14468544.

The previous prime is 43406599. The next prime is 43406609. The reversal of 43406604 is 40660434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43406599) and next prime (43406609).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43406609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21357 + ... + 23300.

It is an arithmetic number, because the mean of its divisors is an integer number (3160794).

Almost surely, 2^43406604 is an apocalyptic number.

It is an amenable number.

43406604 is an abundant number, since it is smaller than the sum of its proper divisors (70381980).

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

43406604 is a wasteful number, since it uses less digits than its factorization.

43406604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44676 (or 44662 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 43406604 is about 6588.3688421338. The cubic root of 43406604 is about 351.4406038202.

The spelling of 43406604 in words is "forty-three million, four hundred six thousand, six hundred four".