221889753 has 8 divisors (see below), whose sum is σ = 328725600. Its totient is φ = 147926484.

The previous prime is 221889743. The next prime is 221889791. The reversal of 221889753 is 357988122.

It is a happy number.

It is not a de Polignac number, because 221889753 - 2¹⁶ = 221824217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221889699 and 221889708.

It is not an unprimeable number, because it can be changed into a prime (221889713) 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, 4109043 + ... + 4109096.

It is an arithmetic number, because the mean of its divisors is an integer number (41090700).

Almost surely, 2^221889753 is an apocalyptic number.

It is an amenable number.

221889753 is a deficient number, since it is larger than the sum of its proper divisors (106835847).

221889753 is an equidigital number, since it uses as much as digits as its factorization.

221889753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8218148 (or 8218142 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 221889753 is about 14895.9643192376. The cubic root of 221889753 is about 605.4046451743.

The spelling of 221889753 in words is "two hundred twenty-one million, eight hundred eighty-nine thousand, seven hundred fifty-three".