109416921 has 8 divisors (see below), whose sum is σ = 146275680. Its totient is φ = 72751392.

The previous prime is 109416919. The next prime is 109416943. The reversal of 109416921 is 129614901.

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

It is not a de Polignac number, because 109416921 - 2¹ = 109416919 is a prime.

It is a super-2 number, since 2×109416921² = 23944125202240482, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (109416961) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46980 + ... + 49253.

It is an arithmetic number, because the mean of its divisors is an integer number (18284460).

Almost surely, 2^109416921 is an apocalyptic number.

It is an amenable number.

109416921 is a deficient number, since it is larger than the sum of its proper divisors (36858759).

109416921 is an equidigital number, since it uses as much as digits as its factorization.

109416921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96615.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 109416921 is about 10460.2543468120. The cubic root of 109416921 is about 478.2938865465.

The spelling of 109416921 in words is "one hundred nine million, four hundred sixteen thousand, nine hundred twenty-one".