40447404 has 48 divisors (see below), whose sum is σ = 105369600. Its totient is φ = 13417488.

The previous prime is 40447399. The next prime is 40447423. The reversal of 40447404 is 40474404.

It is a happy number.

40447404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25029 + ... + 26595.

It is an arithmetic number, because the mean of its divisors is an integer number (2195200).

Almost surely, 2^40447404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40447404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52684800).

40447404 is an abundant number, since it is smaller than the sum of its proper divisors (64922196).

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

40447404 is a wasteful number, since it uses less digits than its factorization.

40447404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 40447404 is about 6359.8273561473. The cubic root of 40447404 is about 343.2655481432.

Subtracting 40447404 from its reverse (40474404), we obtain a cube (27000 = 30³).

The spelling of 40447404 in words is "forty million, four hundred forty-seven thousand, four hundred four".