1234568889 has 24 divisors (see below), whose sum is σ = 1862040960. Its totient is φ = 787220448.

The previous prime is 1234568843. The next prime is 1234568941. The reversal of 1234568889 is 9888654321.

It is not a de Polignac number, because 1234568889 - 2¹⁷ = 1234437817 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1234568089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5824 + ... + 50030.

It is an arithmetic number, because the mean of its divisors is an integer number (77585040).

Almost surely, 2^1234568889 is an apocalyptic number.

It is an amenable number.

1234568889 is a deficient number, since it is larger than the sum of its proper divisors (627472071).

1234568889 is a wasteful number, since it uses less digits than its factorization.

1234568889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44349 (or 44346 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 1234568889 is about 35136.4325024610. The cubic root of 1234568889 is about 1072.7662689982.

The spelling of 1234568889 in words is "one billion, two hundred thirty-four million, five hundred sixty-eight thousand, eight hundred eighty-nine".