123067989 has 12 divisors (see below), whose sum is σ = 193925472. Its totient is φ = 74586600.

The previous prime is 123067979. The next prime is 123067991. The reversal of 123067989 is 989760321.

It is not a de Polignac number, because 123067989 - 2²³ = 114679381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123067939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621457 + ... + 621654.

It is an arithmetic number, because the mean of its divisors is an integer number (16160456).

Almost surely, 2^123067989 is an apocalyptic number.

It is an amenable number.

123067989 is a deficient number, since it is larger than the sum of its proper divisors (70857483).

123067989 is a wasteful number, since it uses less digits than its factorization.

123067989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243128 (or 1243125 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 123067989 is about 11093.6012637917. The cubic root of 123067989 is about 497.4105984821.

The spelling of 123067989 in words is "one hundred twenty-three million, sixty-seven thousand, nine hundred eighty-nine".