123474989 has 4 divisors (see below), whose sum is σ = 134700000. Its totient is φ = 112249980.

The previous prime is 123474983. The next prime is 123475007. The reversal of 123474989 is 989474321.

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.

It is a cyclic number.

It is not a de Polignac number, because 123474989 - 2⁸ = 123474733 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123474983) 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 3 ways as a sum of consecutive naturals, for example, 5612489 + ... + 5612510.

It is an arithmetic number, because the mean of its divisors is an integer number (33675000).

Almost surely, 2^123474989 is an apocalyptic number.

It is an amenable number.

123474989 is a deficient number, since it is larger than the sum of its proper divisors (11225011).

123474989 is a wasteful number, since it uses less digits than its factorization.

123474989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225010.

The product of its digits is 435456, while the sum is 47.

The square root of 123474989 is about 11111.9300303773. The cubic root of 123474989 is about 497.9583264860.

The spelling of 123474989 in words is "one hundred twenty-three million, four hundred seventy-four thousand, nine hundred eighty-nine".