40004033 has 4 divisors (see below), whose sum is σ = 40016688. Its totient is φ = 39991380.

The previous prime is 40004023. The next prime is 40004039. The reversal of 40004033 is 33040004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40004033 - 2⁴ = 40004017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40003999 and 40004017.

It is not an unprimeable number, because it can be changed into a prime (40004039) 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 3 ways as a sum of consecutive naturals, for example, 2918 + ... + 9408.

It is an arithmetic number, because the mean of its divisors is an integer number (10004172).

Almost surely, 2^40004033 is an apocalyptic number.

It is an amenable number.

40004033 is a deficient number, since it is larger than the sum of its proper divisors (12655).

40004033 is an equidigital number, since it uses as much as digits as its factorization.

40004033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12654.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 40004033 is about 6324.8741489456. The cubic root of 40004033 is about 342.0066828374.

Adding to 40004033 its reverse (33040004), we get a palindrome (73044037).

The spelling of 40004033 in words is "forty million, four thousand, thirty-three".