40905713 has 6 divisors (see below), whose sum is σ = 41179554. Its totient is φ = 40632944.

The previous prime is 40905691. The next prime is 40905719. The reversal of 40905713 is 31750904.

40905713 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 only one way, i.e., 29669809 + 11235904 = 5447^2 + 3352^2 .

It is not a de Polignac number, because 40905713 - 2⁶ = 40905649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40905719) 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, 97418 + ... + 97836.

It is an arithmetic number, because the mean of its divisors is an integer number (6863259).

Almost surely, 2^40905713 is an apocalyptic number.

It is an amenable number.

40905713 is a deficient number, since it is larger than the sum of its proper divisors (273841).

40905713 is an frugal number, since it uses more digits than its factorization.

40905713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 40905713 is about 6395.7574219165. The cubic root of 40905713 is about 344.5571942791.

The spelling of 40905713 in words is "forty million, nine hundred five thousand, seven hundred thirteen".