220889291 has 8 divisors (see below), whose sum is σ = 260588544. Its totient is φ = 183225960.

The previous prime is 220889281. The next prime is 220889299. The reversal of 220889291 is 192988022.

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

It is a cyclic number.

It is not a de Polignac number, because 220889291 - 2¹⁰ = 220888267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220889299) 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, 508745 + ... + 509178.

It is an arithmetic number, because the mean of its divisors is an integer number (32573568).

Almost surely, 2^220889291 is an apocalyptic number.

220889291 is a deficient number, since it is larger than the sum of its proper divisors (39699253).

220889291 is a wasteful number, since it uses less digits than its factorization.

220889291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017961.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 220889291 is about 14862.3447342605. The cubic root of 220889291 is about 604.4933864235.

The spelling of 220889291 in words is "two hundred twenty million, eight hundred eighty-nine thousand, two hundred ninety-one".