12393990923 has 8 divisors (see below), whose sum is σ = 12424557600. Its totient is φ = 12363448768.

The previous prime is 12393990911. The next prime is 12393990941. The reversal of 12393990923 is 32909939321.

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 12393990923 - 2⁶ = 12393990859 is a prime.

It is a super-2 number, since 2×12393990923² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12393900923) 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, 1368173 + ... + 1377201.

It is an arithmetic number, because the mean of its divisors is an integer number (1553069700).

Almost surely, 2^12393990923 is an apocalyptic number.

12393990923 is a deficient number, since it is larger than the sum of its proper divisors (30566677).

12393990923 is an equidigital number, since it uses as much as digits as its factorization.

12393990923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261.

The product of its (nonzero) digits is 708588, while the sum is 50.

The spelling of 12393990923 in words is "twelve billion, three hundred ninety-three million, nine hundred ninety thousand, nine hundred twenty-three".