40904001 has 8 divisors (see below), whose sum is σ = 60598560. Its totient is φ = 27269316.

The previous prime is 40903997. The next prime is 40904011. The reversal of 40904001 is 10040904.

It is not a de Polignac number, because 40904001 - 2² = 40903997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40904011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757455 + ... + 757508.

It is an arithmetic number, because the mean of its divisors is an integer number (7574820).

Almost surely, 2^40904001 is an apocalyptic number.

It is an amenable number.

40904001 is a deficient number, since it is larger than the sum of its proper divisors (19694559).

40904001 is a wasteful number, since it uses less digits than its factorization.

40904001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514972 (or 1514966 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 40904001 is about 6395.6235817940. The cubic root of 40904001 is about 344.5523873699.

Adding to 40904001 its reverse (10040904), we get a palindrome (50944905).

The spelling of 40904001 in words is "forty million, nine hundred four thousand, one".