40840444 has 6 divisors (see below), whose sum is σ = 71470784. Its totient is φ = 20420220.

The previous prime is 40840441. The next prime is 40840483. The reversal of 40840444 is 44404804.

It is a super-2 number, since 2×40840444² = 3335883732234272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40840441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105052 + ... + 5105059.

Almost surely, 2^40840444 is an apocalyptic number.

It is an amenable number.

40840444 is a deficient number, since it is larger than the sum of its proper divisors (30630340).

40840444 is a wasteful number, since it uses less digits than its factorization.

40840444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210115 (or 10210113 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 40840444 is about 6390.6528617975. The cubic root of 40840444 is about 344.3738386747.

The spelling of 40840444 in words is "forty million, eight hundred forty thousand, four hundred forty-four".