123993399 has 4 divisors (see below), whose sum is σ = 165324536. Its totient is φ = 82662264.

The previous prime is 123993383. The next prime is 123993403. The reversal of 123993399 is 993399321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123993399 - 2⁴ = 123993383 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 (123993319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20665564 + ... + 20665569.

It is an arithmetic number, because the mean of its divisors is an integer number (41331134).

Almost surely, 2^123993399 is an apocalyptic number.

123993399 is a deficient number, since it is larger than the sum of its proper divisors (41331137).

123993399 is an equidigital number, since it uses as much as digits as its factorization.

123993399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41331136.

The product of its digits is 354294, while the sum is 48.

The square root of 123993399 is about 11135.2323280657. The cubic root of 123993399 is about 498.6542464779.

The spelling of 123993399 in words is "one hundred twenty-three million, nine hundred ninety-three thousand, three hundred ninety-nine".