40445012 has 6 divisors (see below), whose sum is σ = 70778778. Its totient is φ = 20222504.

The previous prime is 40445011. The next prime is 40445021. The reversal of 40445012 is 21054404.

It can be written as a sum of positive squares in only one way, i.e., 28026436 + 12418576 = 5294^2 + 3524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40445011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055623 + ... + 5055630.

It is an arithmetic number, because the mean of its divisors is an integer number (11796463).

Almost surely, 2^40445012 is an apocalyptic number.

It is an amenable number.

40445012 is a deficient number, since it is larger than the sum of its proper divisors (30333766).

40445012 is a wasteful number, since it uses less digits than its factorization.

40445012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111257 (or 10111255 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40445012 is about 6359.6392979476. The cubic root of 40445012 is about 343.2587812699.

Adding to 40445012 its reverse (21054404), we get a palindrome (61499416).

The spelling of 40445012 in words is "forty million, four hundred forty-five thousand, twelve".