40000002404 has 6 divisors (see below), whose sum is σ = 70000004214. Its totient is φ = 20000001200.

The previous prime is 40000002379. The next prime is 40000002421. The reversal of 40000002404 is 40420000004.

It can be written as a sum of positive squares in only one way, i.e., 32507368804 + 7492633600 = 180298^2 + 86560^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000000297 + ... + 5000000304.

It is an arithmetic number, because the mean of its divisors is an integer number (11666667369).

Almost surely, 2^40000002404 is an apocalyptic number.

It is an amenable number.

40000002404 is a deficient number, since it is larger than the sum of its proper divisors (30000001810).

40000002404 is a wasteful number, since it uses less digits than its factorization.

40000002404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000000605 (or 10000000603 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 40000002404 its reverse (40420000004), we get a palindrome (80420002408).

The spelling of 40000002404 in words is "forty billion, two thousand, four hundred four".