40004163 has 6 divisors (see below), whose sum is σ = 57783804. Its totient is φ = 26669436.

The previous prime is 40004143. The next prime is 40004171. The reversal of 40004163 is 36140004.

It is not a de Polignac number, because 40004163 - 2⁵ = 40004131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40004143) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2222445 + ... + 2222462.

It is an arithmetic number, because the mean of its divisors is an integer number (9630634).

Almost surely, 2^40004163 is an apocalyptic number.

40004163 is a deficient number, since it is larger than the sum of its proper divisors (17779641).

40004163 is a wasteful number, since it uses less digits than its factorization.

40004163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444913 (or 4444910 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40004163 is about 6324.8844258216. The cubic root of 40004163 is about 342.0070533069.

Adding to 40004163 its reverse (36140004), we get a palindrome (76144167).

The spelling of 40004163 in words is "forty million, four thousand, one hundred sixty-three".