40445344 has 12 divisors (see below), whose sum is σ = 79626834. Its totient is φ = 20222656.

The previous prime is 40445303. The next prime is 40445369. The reversal of 40445344 is 44354404.

It can be written as a sum of positive squares in only one way, i.e., 29289744 + 11155600 = 5412^2 + 3340^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631927 + ... + 631990.

Almost surely, 2^40445344 is an apocalyptic number.

It is an amenable number.

40445344 is a deficient number, since it is larger than the sum of its proper divisors (39181490).

40445344 is a wasteful number, since it uses less digits than its factorization.

40445344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263927 (or 1263919 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 40445344 is about 6359.6654000034. The cubic root of 40445344 is about 343.2597205007.

Adding to 40445344 its reverse (44354404), we get a palindrome (84799748).

The spelling of 40445344 in words is "forty million, four hundred forty-five thousand, three hundred forty-four".