40463641 has 2 divisors, whose sum is σ = 40463642. Its totient is φ = 40463640.

The previous prime is 40463639. The next prime is 40463669. The reversal of 40463641 is 14636404.

It is a happy number.

40463641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (40463669) can be obtained adding 40463641 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 1974025 = 6204^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 40463641 - 2¹ = 40463639 is a prime.

Together with 40463639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40463611) 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, 20231820 + 20231821.

It is an arithmetic number, because the mean of its divisors is an integer number (20231821).

Almost surely, 2^40463641 is an apocalyptic number.

It is an amenable number.

40463641 is a deficient number, since it is larger than the sum of its proper divisors (1).

40463641 is an equidigital number, since it uses as much as digits as its factorization.

40463641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40463641 is about 6361.1037564247. The cubic root of 40463641 is about 343.3114749231.

The spelling of 40463641 in words is "forty million, four hundred sixty-three thousand, six hundred forty-one".