123443399 has 8 divisors (see below), whose sum is σ = 132144000. Its totient is φ = 114963192.

The previous prime is 123443393. The next prime is 123443407. The reversal of 123443399 is 993344321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123443399 - 2⁸ = 123443143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123443393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53939 + ... + 56180.

It is an arithmetic number, because the mean of its divisors is an integer number (16518000).

Almost surely, 2^123443399 is an apocalyptic number.

123443399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

123443399 is a deficient number, since it is larger than the sum of its proper divisors (8700601).

123443399 is a wasteful number, since it uses less digits than its factorization.

123443399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110197.

The product of its digits is 69984, while the sum is 38.

The square root of 123443399 is about 11110.5084942139. The cubic root of 123443399 is about 497.9158567643.

The spelling of 123443399 in words is "one hundred twenty-three million, four hundred forty-three thousand, three hundred ninety-nine".