12351939 has 4 divisors (see below), whose sum is σ = 16469256. Its totient is φ = 8234624.

The previous prime is 12351931. The next prime is 12351949. The reversal of 12351939 is 93915321.

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

It is a cyclic number.

It is not a de Polignac number, because 12351939 - 2³ = 12351931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12351931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2058654 + ... + 2058659.

It is an arithmetic number, because the mean of its divisors is an integer number (4117314).

Almost surely, 2^12351939 is an apocalyptic number.

12351939 is a deficient number, since it is larger than the sum of its proper divisors (4117317).

12351939 is an equidigital number, since it uses as much as digits as its factorization.

12351939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117316.

The product of its digits is 7290, while the sum is 33.

The square root of 12351939 is about 3514.5325435967. The cubic root of 12351939 is about 231.1594820800.

The spelling of 12351939 in words is "twelve million, three hundred fifty-one thousand, nine hundred thirty-nine".