123413889 has 4 divisors (see below), whose sum is σ = 164551856. Its totient is φ = 82275924.

The previous prime is 123413881. The next prime is 123413893. The reversal of 123413889 is 988314321.

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: 988314321 = 3 ⋅329438107.

It is not a de Polignac number, because 123413889 - 2³ = 123413881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123413881) 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, 20568979 + ... + 20568984.

It is an arithmetic number, because the mean of its divisors is an integer number (41137964).

Almost surely, 2^123413889 is an apocalyptic number.

It is an amenable number.

123413889 is a deficient number, since it is larger than the sum of its proper divisors (41137967).

123413889 is an equidigital number, since it uses as much as digits as its factorization.

123413889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41137966.

The product of its digits is 41472, while the sum is 39.

The square root of 123413889 is about 11109.1803928103. The cubic root of 123413889 is about 497.8761768569.

The spelling of 123413889 in words is "one hundred twenty-three million, four hundred thirteen thousand, eight hundred eighty-nine".