40445604 has 72 divisors (see below), whose sum is σ = 111384000. Its totient is φ = 12325824.

The previous prime is 40445599. The next prime is 40445609. The reversal of 40445604 is 40654404.

It is an interprime number because it is at equal distance from previous prime (40445599) and next prime (40445609).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (40445609) 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 23 ways as a sum of consecutive naturals, for example, 18817 + ... + 20855.

It is an arithmetic number, because the mean of its divisors is an integer number (1547000).

Almost surely, 2^40445604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40445604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55692000).

40445604 is an abundant number, since it is smaller than the sum of its proper divisors (70938396).

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

40445604 is a wasteful number, since it uses less digits than its factorization.

40445604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 40445604 is about 6359.6858412975. The cubic root of 40445604 is about 343.2604560393.

The spelling of 40445604 in words is "forty million, four hundred forty-five thousand, six hundred four".