40209117 has 8 divisors (see below), whose sum is σ = 57736224. Its totient is φ = 24744048.

The previous prime is 40209107. The next prime is 40209137. The reversal of 40209117 is 71190204.

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

It is not a de Polignac number, because 40209117 - 2⁶ = 40209053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40209107) 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, 515463 + ... + 515540.

It is an arithmetic number, because the mean of its divisors is an integer number (7217028).

Almost surely, 2^40209117 is an apocalyptic number.

It is an amenable number.

40209117 is a deficient number, since it is larger than the sum of its proper divisors (17527107).

40209117 is a wasteful number, since it uses less digits than its factorization.

40209117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031019.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 40209117 is about 6341.0659198592. The cubic root of 40209117 is about 342.5901288370.

The spelling of 40209117 in words is "forty million, two hundred nine thousand, one hundred seventeen".