40449812 has 36 divisors (see below), whose sum is σ = 78166620. Its totient is φ = 18300672.

The previous prime is 40449743. The next prime is 40449833. The reversal of 40449812 is 21894404.

It can be written as a sum of positive squares in 6 ways, for example, as 10023556 + 30426256 = 3166^2 + 5516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35264 + ... + 36392.

It is an arithmetic number, because the mean of its divisors is an integer number (2171295).

Almost surely, 2^40449812 is an apocalyptic number.

It is an amenable number.

40449812 is a deficient number, since it is larger than the sum of its proper divisors (37716808).

40449812 is a wasteful number, since it uses less digits than its factorization.

40449812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40449812 is about 6360.0166666448. The cubic root of 40449812 is about 343.2723600104.

The spelling of 40449812 in words is "forty million, four hundred forty-nine thousand, eight hundred twelve".