40009382 has 24 divisors (see below), whose sum is σ = 71138736. Its totient is φ = 16821168.

The previous prime is 40009369. The next prime is 40009391. The reversal of 40009382 is 28390004.

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, 1343 + ... + 9045.

It is an arithmetic number, because the mean of its divisors is an integer number (2964114).

Almost surely, 2^40009382 is an apocalyptic number.

40009382 is a deficient number, since it is larger than the sum of its proper divisors (31129354).

40009382 is a wasteful number, since it uses less digits than its factorization.

40009382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772 (or 7765 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40009382 is about 6325.2969890749. The cubic root of 40009382 is about 342.0219255690.

Adding to 40009382 its reverse (28390004), we get a palindrome (68399386).

The spelling of 40009382 in words is "forty million, nine thousand, three hundred eighty-two".