40009804 has 12 divisors (see below), whose sum is σ = 70144200. Its totient is φ = 19968608.

The previous prime is 40009777. The next prime is 40009813. The reversal of 40009804 is 40890004.

It is a super-2 number, since 2×40009804² = 3201568832236832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6514 + ... + 11065.

It is an arithmetic number, because the mean of its divisors is an integer number (5845350).

Almost surely, 2^40009804 is an apocalyptic number.

It is an amenable number.

40009804 is a deficient number, since it is larger than the sum of its proper divisors (30134396).

40009804 is a wasteful number, since it uses less digits than its factorization.

40009804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18152 (or 18150 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 40009804 is about 6325.3303471044. The cubic root of 40009804 is about 342.0231280598.

Adding to 40009804 its reverse (40890004), we get a palindrome (80899808).

The spelling of 40009804 in words is "forty million, nine thousand, eight hundred four".