12499538 has 8 divisors (see below), whose sum is σ = 18986880. Its totient is φ = 6170580.

The previous prime is 12499537. The next prime is 12499561. The reversal of 12499538 is 83599421.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12499495 and 12499504.

It is not an unprimeable number, because it can be changed into a prime (12499537) 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, 39398 + ... + 39713.

It is an arithmetic number, because the mean of its divisors is an integer number (2373360).

Almost surely, 2^12499538 is an apocalyptic number.

12499538 is a deficient number, since it is larger than the sum of its proper divisors (6487342).

12499538 is an equidigital number, since it uses as much as digits as its factorization.

12499538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79192.

The product of its digits is 77760, while the sum is 41.

The square root of 12499538 is about 3535.4685686624. The cubic root of 12499538 is about 232.0765824267.

The spelling of 12499538 in words is "twelve million, four hundred ninety-nine thousand, five hundred thirty-eight".