220534989 has 8 divisors (see below), whose sum is σ = 298435680. Its totient is φ = 144828816.

The previous prime is 220534973. The next prime is 220534997. The reversal of 220534989 is 989435022.

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

It is not a de Polignac number, because 220534989 - 2⁴ = 220534973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220534989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220534949) 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, 548394 + ... + 548795.

It is an arithmetic number, because the mean of its divisors is an integer number (37304460).

Almost surely, 2^220534989 is an apocalyptic number.

It is an amenable number.

220534989 is a deficient number, since it is larger than the sum of its proper divisors (77900691).

220534989 is a wasteful number, since it uses less digits than its factorization.

220534989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097259.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 220534989 is about 14850.4204990970. The cubic root of 220534989 is about 604.1700150386.

The spelling of 220534989 in words is "two hundred twenty million, five hundred thirty-four thousand, nine hundred eighty-nine".