40809601 has 12 divisors (see below), whose sum is σ = 47616660. Its totient is φ = 34873440.

The previous prime is 40809599. The next prime is 40809607. The reversal of 40809601 is 10690804.

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 14554225 = 5124^2 + 3815^2 .

It is not a de Polignac number, because 40809601 - 2¹ = 40809599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40809601.

It is not an unprimeable number, because it can be changed into a prime (40809607) 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, 17991 + ... + 20131.

It is an arithmetic number, because the mean of its divisors is an integer number (3968055).

Almost surely, 2^40809601 is an apocalyptic number.

It is an amenable number.

40809601 is a deficient number, since it is larger than the sum of its proper divisors (6807059).

40809601 is a wasteful number, since it uses less digits than its factorization.

40809601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 40809601 is about 6388.2392722878. The cubic root of 40809601 is about 344.2871256340.

The spelling of 40809601 in words is "forty million, eight hundred nine thousand, six hundred one".