40655653 has 6 divisors (see below), whose sum is σ = 43188146. Its totient is φ = 38263872.

The previous prime is 40655639. The next prime is 40655701. The reversal of 40655653 is 35655604.

40655653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 10647169 + 30008484 = 3263^2 + 5478^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40655653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40655753) 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 in 5 ways as a sum of consecutive naturals, for example, 70050 + ... + 70627.

Almost surely, 2^40655653 is an apocalyptic number.

It is an amenable number.

40655653 is a deficient number, since it is larger than the sum of its proper divisors (2532493).

40655653 is a wasteful number, since it uses less digits than its factorization.

40655653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140711 (or 140694 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 40655653 is about 6376.1785577256. The cubic root of 40655653 is about 343.8536565413.

The spelling of 40655653 in words is "forty million, six hundred fifty-five thousand, six hundred fifty-three".