108909417 has 8 divisors (see below), whose sum is σ = 149896960. Its totient is φ = 70264080.

The previous prime is 108909397. The next prime is 108909467. The reversal of 108909417 is 714909801.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-108909417 is a prime.

It is a super-2 number, since 2×108909417² = 23722522222559778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108909467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585442 + ... + 585627.

It is an arithmetic number, because the mean of its divisors is an integer number (18737120).

Almost surely, 2^108909417 is an apocalyptic number.

It is an amenable number.

108909417 is a deficient number, since it is larger than the sum of its proper divisors (40987543).

108909417 is a wasteful number, since it uses less digits than its factorization.

108909417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171103.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 108909417 is about 10435.9674683280. The cubic root of 108909417 is about 477.5532566715.

The spelling of 108909417 in words is "one hundred eight million, nine hundred nine thousand, four hundred seventeen".