123533489 has 4 divisors (see below), whose sum is σ = 123652080. Its totient is φ = 123414900.

The previous prime is 123533471. The next prime is 123533507. The reversal of 123533489 is 984335321.

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: 984335321 = 163 ⋅6038867.

It is an interprime number because it is at equal distance from previous prime (123533471) and next prime (123533507).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123533489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123533689) 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, 57719 + ... + 59820.

It is an arithmetic number, because the mean of its divisors is an integer number (30913020).

Almost surely, 2^123533489 is an apocalyptic number.

It is an amenable number.

123533489 is a deficient number, since it is larger than the sum of its proper divisors (118591).

123533489 is a wasteful number, since it uses less digits than its factorization.

123533489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118590.

The product of its digits is 77760, while the sum is 38.

The square root of 123533489 is about 11114.5620246594. The cubic root of 123533489 is about 498.0369549949.

The spelling of 123533489 in words is "one hundred twenty-three million, five hundred thirty-three thousand, four hundred eighty-nine".