40215117 has 8 divisors (see below), whose sum is σ = 54012096. Its totient is φ = 26614112.

The previous prime is 40215113. The next prime is 40215139. The reversal of 40215117 is 71151204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40215117 - 2² = 40215113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40215093 and 40215102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40215113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48513 + ... + 49334.

It is an arithmetic number, because the mean of its divisors is an integer number (6751512).

Almost surely, 2^40215117 is an apocalyptic number.

It is an amenable number.

40215117 is a deficient number, since it is larger than the sum of its proper divisors (13796979).

40215117 is a wasteful number, since it uses less digits than its factorization.

40215117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97987.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 40215117 is about 6341.5390087896. The cubic root of 40215117 is about 342.6071684099.

The spelling of 40215117 in words is "forty million, two hundred fifteen thousand, one hundred seventeen".