40115115 has 32 divisors (see below), whose sum is σ = 71792640. Its totient is φ = 21251808.

The previous prime is 40115093. The next prime is 40115143. The reversal of 40115115 is 51151104.

It is a happy number.

40115115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40115115 - 2⁵ = 40115083 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 21094 + ... + 22916.

It is an arithmetic number, because the mean of its divisors is an integer number (2243520).

Almost surely, 2^40115115 is an apocalyptic number.

40115115 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40115115 is a deficient number, since it is larger than the sum of its proper divisors (31677525).

40115115 is a wasteful number, since it uses less digits than its factorization.

40115115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 40115115 is about 6333.6494219368. The cubic root of 40115115 is about 342.3229482549.

Adding to 40115115 its reverse (51151104), we get a palindrome (91266219).

The spelling of 40115115 in words is "forty million, one hundred fifteen thousand, one hundred fifteen".