12509938 has 8 divisors (see below), whose sum is σ = 21445632. Its totient is φ = 5361396.

The previous prime is 12509921. The next prime is 12509951. The reversal of 12509938 is 83990521.

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

It is a junction number, because it is equal to n+sod(n) for n = 12509897 and 12509906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446770 + ... + 446797.

It is an arithmetic number, because the mean of its divisors is an integer number (2680704).

Almost surely, 2^12509938 is an apocalyptic number.

12509938 is a deficient number, since it is larger than the sum of its proper divisors (8935694).

12509938 is an equidigital number, since it uses as much as digits as its factorization.

12509938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893576.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 12509938 is about 3536.9390721357. The cubic root of 12509938 is about 232.1409295349.

The spelling of 12509938 in words is "twelve million, five hundred nine thousand, nine hundred thirty-eight".