40205117 has 8 divisors (see below), whose sum is σ = 40975200. Its totient is φ = 39442000.

The previous prime is 40205101. The next prime is 40205141. The reversal of 40205117 is 71150204.

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 40205117 - 2⁴ = 40205101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40205177) 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, 10742 + ... + 13992.

It is an arithmetic number, because the mean of its divisors is an integer number (5121900).

Almost surely, 2^40205117 is an apocalyptic number.

It is an amenable number.

40205117 is a deficient number, since it is larger than the sum of its proper divisors (770083).

40205117 is a wasteful number, since it uses less digits than its factorization.

40205117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 40205117 is about 6340.7505076292. The cubic root of 40205117 is about 342.5787681801.

The spelling of 40205117 in words is "forty million, two hundred five thousand, one hundred seventeen".