40043604 has 12 divisors (see below), whose sum is σ = 93435104. Its totient is φ = 13347864.

The previous prime is 40043603. The next prime is 40043617. The reversal of 40043604 is 40634004.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668472 + ... + 1668495.

Almost surely, 2^40043604 is an apocalyptic number.

It is an amenable number.

40043604 is an abundant number, since it is smaller than the sum of its proper divisors (53391500).

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

40043604 is a wasteful number, since it uses less digits than its factorization.

40043604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336974 (or 3336972 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40043604 is about 6328.0015802779. The cubic root of 40043604 is about 342.1194138592.

Adding to 40043604 its reverse (40634004), we get a palindrome (80677608).

The spelling of 40043604 in words is "forty million, forty-three thousand, six hundred four".