12488139 has 6 divisors (see below), whose sum is σ = 18038436. Its totient is φ = 8325420.

The previous prime is 12488131. The next prime is 12488159. The reversal of 12488139 is 93188421.

It is not a de Polignac number, because 12488139 - 2³ = 12488131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12488131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 693777 + ... + 693794.

It is an arithmetic number, because the mean of its divisors is an integer number (3006406).

Almost surely, 2^12488139 is an apocalyptic number.

12488139 is a deficient number, since it is larger than the sum of its proper divisors (5550297).

12488139 is a wasteful number, since it uses less digits than its factorization.

12488139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387577 (or 1387574 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12488139 is about 3533.8561091250. The cubic root of 12488139 is about 232.0060132706.

The spelling of 12488139 in words is "twelve million, four hundred eighty-eight thousand, one hundred thirty-nine".