109925921 has 8 divisors (see below), whose sum is σ = 129961920. Its totient is φ = 90973008.

The previous prime is 109925897. The next prime is 109925951. The reversal of 109925921 is 129529901.

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

It is not a de Polignac number, because 109925921 - 2⁶ = 109925857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109925951) 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, 270551 + ... + 270956.

It is an arithmetic number, because the mean of its divisors is an integer number (16245240).

Almost surely, 2^109925921 is an apocalyptic number.

It is an amenable number.

109925921 is a deficient number, since it is larger than the sum of its proper divisors (20035999).

109925921 is an equidigital number, since it uses as much as digits as its factorization.

109925921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541543.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 109925921 is about 10484.5563091625. The cubic root of 109925921 is about 479.0344028882.

The spelling of 109925921 in words is "one hundred nine million, nine hundred twenty-five thousand, nine hundred twenty-one".