40115415 has 32 divisors (see below), whose sum is σ = 65664000. Its totient is φ = 20908800.

The previous prime is 40115407. The next prime is 40115423. The reversal of 40115415 is 51451104.

40115415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40115407) and next prime (40115423).

It is not a de Polignac number, because 40115415 - 2³ = 40115407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40115391 and 40115400.

It is a congruent number.

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, 201486 + ... + 201684.

It is an arithmetic number, because the mean of its divisors is an integer number (2052000).

Almost surely, 2^40115415 is an apocalyptic number.

40115415 is a deficient number, since it is larger than the sum of its proper divisors (25548585).

40115415 is a wasteful number, since it uses less digits than its factorization.

40115415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 40115415 is about 6333.6731049210. The cubic root of 40115415 is about 342.3238016043.

Adding to 40115415 its reverse (51451104), we get a palindrome (91566519).

The spelling of 40115415 in words is "forty million, one hundred fifteen thousand, four hundred fifteen".