12938251 has 4 divisors (see below), whose sum is σ = 12973312. Its totient is φ = 12903192.

The previous prime is 12938249. The next prime is 12938273. The reversal of 12938251 is 15283921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15283921 = 409 ⋅37369.

It is a cyclic number.

It is not a de Polignac number, because 12938251 - 2¹ = 12938249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12938231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16971 + ... + 17716.

It is an arithmetic number, because the mean of its divisors is an integer number (3243328).

Almost surely, 2^12938251 is an apocalyptic number.

12938251 is a deficient number, since it is larger than the sum of its proper divisors (35061).

12938251 is an equidigital number, since it uses as much as digits as its factorization.

12938251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35060.

The product of its digits is 4320, while the sum is 31.

The square root of 12938251 is about 3596.9780371862. The cubic root of 12938251 is about 234.7605891344.

The spelling of 12938251 in words is "twelve million, nine hundred thirty-eight thousand, two hundred fifty-one".