40809895 has 12 divisors (see below), whose sum is σ = 56967624. Its totient is φ = 27983760.

The previous prime is 40809863. The next prime is 40809913. The reversal of 40809895 is 59890804.

It is a happy number.

It is not a de Polignac number, because 40809895 - 2⁵ = 40809863 is a prime.

It is a super-2 number, since 2×40809895² = 3330895059822050, which contains 22 as substring.

It is a congruent number.

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, 83041 + ... + 83530.

It is an arithmetic number, because the mean of its divisors is an integer number (4747302).

Almost surely, 2^40809895 is an apocalyptic number.

40809895 is a deficient number, since it is larger than the sum of its proper divisors (16157729).

40809895 is a wasteful number, since it uses less digits than its factorization.

40809895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166590 (or 166583 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 40809895 is about 6388.2622832817. The cubic root of 40809895 is about 344.2879524017.

The spelling of 40809895 in words is "forty million, eight hundred nine thousand, eight hundred ninety-five".