40447812 has 48 divisors (see below), whose sum is σ = 97372800. Its totient is φ = 13059840.

The previous prime is 40447807. The next prime is 40447859. The reversal of 40447812 is 21874404.

It is a self number, because there is not a number n which added to its sum of digits gives 40447812.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112489 + ... + 112847.

It is an arithmetic number, because the mean of its divisors is an integer number (2028600).

Almost surely, 2^40447812 is an apocalyptic number.

It is an amenable number.

40447812 is an abundant number, since it is smaller than the sum of its proper divisors (56924988).

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

40447812 is a wasteful number, since it uses less digits than its factorization.

40447812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 40447812 is about 6359.8594324089. The cubic root of 40447812 is about 343.2667023324.

The spelling of 40447812 in words is "forty million, four hundred forty-seven thousand, eight hundred twelve".