40209604 has 24 divisors (see below), whose sum is σ = 73407488. Its totient is φ = 19249920.

The previous prime is 40209571. The next prime is 40209629. The reversal of 40209604 is 40690204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10357 + ... + 13699.

Almost surely, 2^40209604 is an apocalyptic number.

It is an amenable number.

40209604 is a deficient number, since it is larger than the sum of its proper divisors (33197884).

40209604 is a wasteful number, since it uses less digits than its factorization.

40209604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40209604 is about 6341.1043202269. The cubic root of 40209604 is about 342.5915119456.

Adding to 40209604 its reverse (40690204), we get a palindrome (80899808).

The spelling of 40209604 in words is "forty million, two hundred nine thousand, six hundred four".