123882889 has 8 divisors (see below), whose sum is σ = 135930312. Its totient is φ = 112195200.

The previous prime is 123882833. The next prime is 123882911. The reversal of 123882889 is 988288321.

It can be written as a sum of positive squares in 4 ways, for example, as 50523664 + 73359225 = 7108^2 + 8565^2 .

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

It is not a de Polignac number, because 123882889 - 2¹³ = 123874697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123889889) 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, 89212 + ... + 90589.

It is an arithmetic number, because the mean of its divisors is an integer number (16991289).

Almost surely, 2^123882889 is an apocalyptic number.

It is an amenable number.

123882889 is a deficient number, since it is larger than the sum of its proper divisors (12047423).

123882889 is a wasteful number, since it uses less digits than its factorization.

123882889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179867.

The product of its digits is 442368, while the sum is 49.

The square root of 123882889 is about 11130.2690443673. The cubic root of 123882889 is about 498.5060593953.

The spelling of 123882889 in words is "one hundred twenty-three million, eight hundred eighty-two thousand, eight hundred eighty-nine".