223862989 has 4 divisors (see below), whose sum is σ = 255843424. Its totient is φ = 191882556.

The previous prime is 223862971. The next prime is 223863007. The reversal of 223862989 is 989268322.

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 an interprime number because it is at equal distance from previous prime (223862971) and next prime (223863007).

It is a cyclic number.

It is not a de Polignac number, because 223862989 - 2⁵ = 223862957 is a prime.

It is a super-2 number, since 2×223862989² = 100229275688028242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223862489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15990207 + ... + 15990220.

It is an arithmetic number, because the mean of its divisors is an integer number (63960856).

Almost surely, 2^223862989 is an apocalyptic number.

It is an amenable number.

223862989 is a deficient number, since it is larger than the sum of its proper divisors (31980435).

223862989 is an equidigital number, since it uses as much as digits as its factorization.

223862989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31980434.

The product of its digits is 746496, while the sum is 49.

The square root of 223862989 is about 14962.0516307089. The cubic root of 223862989 is about 607.1939458792.

The spelling of 223862989 in words is "two hundred twenty-three million, eight hundred sixty-two thousand, nine hundred eighty-nine".