40447384 has 8 divisors (see below), whose sum is σ = 75838860. Its totient is φ = 20223688.

The previous prime is 40447367. The next prime is 40447387. The reversal of 40447384 is 48374404.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40447387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527954 + ... + 2527969.

Almost surely, 2^40447384 is an apocalyptic number.

It is an amenable number.

40447384 is a deficient number, since it is larger than the sum of its proper divisors (35391476).

40447384 is a wasteful number, since it uses less digits than its factorization.

40447384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055929 (or 5055925 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 34.

The square root of 40447384 is about 6359.8257837774. The cubic root of 40447384 is about 343.2654915651.

The spelling of 40447384 in words is "forty million, four hundred forty-seven thousand, three hundred eighty-four".