220894489 has 4 divisors (see below), whose sum is σ = 221734656. Its totient is φ = 220054324.

The previous prime is 220894441. The next prime is 220894519. The reversal of 220894489 is 984498022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220894489 - 2¹³ = 220886297 is a prime.

It is a super-2 number, since 2×220894489² = 97588750541142242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220894409) 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, 419689 + ... + 420214.

It is an arithmetic number, because the mean of its divisors is an integer number (55433664).

Almost surely, 2^220894489 is an apocalyptic number.

It is an amenable number.

220894489 is a deficient number, since it is larger than the sum of its proper divisors (840167).

220894489 is an equidigital number, since it uses as much as digits as its factorization.

220894489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840166.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 220894489 is about 14862.5196046969. The cubic root of 220894489 is about 604.4981280627.

The spelling of 220894489 in words is "two hundred twenty million, eight hundred ninety-four thousand, four hundred eighty-nine".