110447921 has 4 divisors (see below), whose sum is σ = 114256500. Its totient is φ = 106639344.

The previous prime is 110447879. The next prime is 110447971. The reversal of 110447921 is 129744011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 129744011 = 61 ⋅2126951.

It can be written as a sum of positive squares in 2 ways, for example, as 39551521 + 70896400 = 6289^2 + 8420^2 .

It is a cyclic number.

It is not a de Polignac number, because 110447921 - 2¹⁴ = 110431537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 3808549 = 110447921 / (1 + 1 + 0 + 4 + 4 + 7 + 9 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110447971) 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 3 ways as a sum of consecutive naturals, for example, 1904246 + ... + 1904303.

It is an arithmetic number, because the mean of its divisors is an integer number (28564125).

Almost surely, 2^110447921 is an apocalyptic number.

It is an amenable number.

110447921 is a deficient number, since it is larger than the sum of its proper divisors (3808579).

110447921 is an equidigital number, since it uses as much as digits as its factorization.

110447921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808578.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 110447921 is about 10509.4205834575. The cubic root of 110447921 is about 479.7914617854.

The spelling of 110447921 in words is "one hundred ten million, four hundred forty-seven thousand, nine hundred twenty-one".