40106447 has 2 divisors, whose sum is σ = 40106448. Its totient is φ = 40106446.

The previous prime is 40106399. The next prime is 40106453. The reversal of 40106447 is 74460104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40106447 - 2¹² = 40102351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40106047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20053223 + 20053224.

It is an arithmetic number, because the mean of its divisors is an integer number (20053224).

Almost surely, 2^40106447 is an apocalyptic number.

40106447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40106447 is an equidigital number, since it uses as much as digits as its factorization.

40106447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 40106447 is about 6332.9651033304. The cubic root of 40106447 is about 342.2982903085.

The spelling of 40106447 in words is "forty million, one hundred six thousand, four hundred forty-seven".