40305655 has 12 divisors (see below), whose sum is σ = 52374600. Its totient is φ = 29763552.

The previous prime is 40305653. The next prime is 40305667. The reversal of 40305655 is 55650304.

It is not a de Polignac number, because 40305655 - 2¹ = 40305653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40305653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23005 + ... + 24694.

It is an arithmetic number, because the mean of its divisors is an integer number (4364550).

Almost surely, 2^40305655 is an apocalyptic number.

40305655 is a deficient number, since it is larger than the sum of its proper divisors (12068945).

40305655 is a wasteful number, since it uses less digits than its factorization.

40305655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47730 (or 47717 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 40305655 is about 6348.6734834924. The cubic root of 40305655 is about 342.8640843915.

Adding to 40305655 its reverse (55650304), we get a palindrome (95955959).

The spelling of 40305655 in words is "forty million, three hundred five thousand, six hundred fifty-five".