40305444 has 12 divisors (see below), whose sum is σ = 94046064. Its totient is φ = 13435144.

The previous prime is 40305443. The next prime is 40305449. The reversal of 40305444 is 44450304.

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

It is not an unprimeable number, because it can be changed into a prime (40305443) 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, 1679382 + ... + 1679405.

It is an arithmetic number, because the mean of its divisors is an integer number (7837172).

Almost surely, 2^40305444 is an apocalyptic number.

It is an amenable number.

40305444 is an abundant number, since it is smaller than the sum of its proper divisors (53740620).

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

40305444 is a wasteful number, since it uses less digits than its factorization.

40305444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358794 (or 3358792 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 40305444 is about 6348.6568658260. The cubic root of 40305444 is about 342.8634860930.

Adding to 40305444 its reverse (44450304), we get a palindrome (84755748).

The spelling of 40305444 in words is "forty million, three hundred five thousand, four hundred forty-four".