123088489 has 4 divisors (see below), whose sum is σ = 125951056. Its totient is φ = 120225924.

The previous prime is 123088487. The next prime is 123088523. The reversal of 123088489 is 984880321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 984880321 = 3469 ⋅283909.

It is a cyclic number.

It is not a de Polignac number, because 123088489 - 2¹ = 123088487 is a prime.

It is a super-2 number, since 2×123088489² = 30301552248606242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2862523 = 123088489 / (1 + 2 + 3 + 0 + 8 + 8 + 4 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123088481) 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, 1431219 + ... + 1431304.

It is an arithmetic number, because the mean of its divisors is an integer number (31487764).

Almost surely, 2^123088489 is an apocalyptic number.

It is an amenable number.

123088489 is a deficient number, since it is larger than the sum of its proper divisors (2862567).

123088489 is an equidigital number, since it uses as much as digits as its factorization.

123088489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862566.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 123088489 is about 11094.5251813676. The cubic root of 123088489 is about 497.4382156045.

The spelling of 123088489 in words is "one hundred twenty-three million, eighty-eight thousand, four hundred eighty-nine".