40809115 has 8 divisors (see below), whose sum is σ = 49447008. Its totient is φ = 32329920.

The previous prime is 40809101. The next prime is 40809121. The reversal of 40809115 is 51190804.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40809115 - 2⁷ = 40808987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39106 + ... + 40135.

It is an arithmetic number, because the mean of its divisors is an integer number (6180876).

Almost surely, 2^40809115 is an apocalyptic number.

40809115 is a deficient number, since it is larger than the sum of its proper divisors (8637893).

40809115 is a wasteful number, since it uses less digits than its factorization.

40809115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79349.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 40809115 is about 6388.2012335242. The cubic root of 40809115 is about 344.2857589278.

Adding to 40809115 its reverse (51190804), we get a palindrome (91999919).

The spelling of 40809115 in words is "forty million, eight hundred nine thousand, one hundred fifteen".