40641473 has 2 divisors, whose sum is σ = 40641474. Its totient is φ = 40641472.

The previous prime is 40641457. The next prime is 40641487. The reversal of 40641473 is 37414604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38837824 + 1803649 = 6232^2 + 1343^2 .

It is a cyclic number.

It is not a de Polignac number, because 40641473 - 2⁴ = 40641457 is a prime.

It is not a weakly prime, because it can be changed into another prime (40641443) 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 as a sum of consecutive naturals, namely, 20320736 + 20320737.

It is an arithmetic number, because the mean of its divisors is an integer number (20320737).

Almost surely, 2^40641473 is an apocalyptic number.

It is an amenable number.

40641473 is a deficient number, since it is larger than the sum of its proper divisors (1).

40641473 is an equidigital number, since it uses as much as digits as its factorization.

40641473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40641473 is about 6375.0665094570. The cubic root of 40641473 is about 343.8136751244.

It can be divided in two parts, 40641 and 473, that added together give a palindrome (41114).

The spelling of 40641473 in words is "forty million, six hundred forty-one thousand, four hundred seventy-three".