40006471 has 2 divisors, whose sum is σ = 40006472. Its totient is φ = 40006470.

The previous prime is 40006433. The next prime is 40006481. The reversal of 40006471 is 17460004.

40006471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40006471 - 2²³ = 31617863 is a prime.

It is a super-3 number, since 3×40006471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40006481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003235 + 20003236.

It is an arithmetic number, because the mean of its divisors is an integer number (20003236).

Almost surely, 2^40006471 is an apocalyptic number.

40006471 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006471 is an equidigital number, since it uses as much as digits as its factorization.

40006471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40006471 is about 6325.0668771168. The cubic root of 40006471 is about 342.0136304315.

Adding to 40006471 its reverse (17460004), we get a palindrome (57466475).

The spelling of 40006471 in words is "forty million, six thousand, four hundred seventy-one".