40591305 has 12 divisors (see below), whose sum is σ = 70358340. Its totient is φ = 21648672.

The previous prime is 40591289. The next prime is 40591333. The reversal of 40591305 is 50319504.

40591305 is a `hidden beast` number, since 40 + 591 + 30 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10517049 + 30074256 = 3243^2 + 5484^2 .

It is not a de Polignac number, because 40591305 - 2⁴ = 40591289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450970 + ... + 451059.

It is an arithmetic number, because the mean of its divisors is an integer number (5863195).

Almost surely, 2^40591305 is an apocalyptic number.

40591305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40591305 is a deficient number, since it is larger than the sum of its proper divisors (29767035).

40591305 is a wasteful number, since it uses less digits than its factorization.

40591305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902040 (or 902037 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 40591305 is about 6371.1305904054. The cubic root of 40591305 is about 343.6721485406.

The spelling of 40591305 in words is "forty million, five hundred ninety-one thousand, three hundred five".