12539698 has 4 divisors (see below), whose sum is σ = 18809550. Its totient is φ = 6269848.

The previous prime is 12539663. The next prime is 12539701. The reversal of 12539698 is 89693521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89693521 = 163 ⋅550267.

It can be written as a sum of positive squares in only one way, i.e., 9381969 + 3157729 = 3063^2 + 1777^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134923 + ... + 3134926.

Almost surely, 2^12539698 is an apocalyptic number.

12539698 is a deficient number, since it is larger than the sum of its proper divisors (6269852).

12539698 is an equidigital number, since it uses as much as digits as its factorization.

12539698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6269851.

The product of its digits is 116640, while the sum is 43.

The square root of 12539698 is about 3541.1436005901. The cubic root of 12539698 is about 232.3248644472.

The spelling of 12539698 in words is "twelve million, five hundred thirty-nine thousand, six hundred ninety-eight".