40219693 has 2 divisors, whose sum is σ = 40219694. Its totient is φ = 40219692.

The previous prime is 40219687. The next prime is 40219721. The reversal of 40219693 is 39691204.

40219693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35497764 + 4721929 = 5958^2 + 2173^2 .

It is a cyclic number.

It is not a de Polignac number, because 40219693 - 2⁵ = 40219661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40219643) 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, 20109846 + 20109847.

It is an arithmetic number, because the mean of its divisors is an integer number (20109847).

Almost surely, 2^40219693 is an apocalyptic number.

It is an amenable number.

40219693 is a deficient number, since it is larger than the sum of its proper divisors (1).

40219693 is an equidigital number, since it uses as much as digits as its factorization.

40219693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 40219693 is about 6341.8997942257. The cubic root of 40219693 is about 342.6201627850.

The spelling of 40219693 in words is "forty million, two hundred nineteen thousand, six hundred ninety-three".