12598749 has 6 divisors (see below), whose sum is σ = 18198206. Its totient is φ = 8399160.

The previous prime is 12598739. The next prime is 12598769. The reversal of 12598749 is 94789521.

12598749 is a `hidden beast` number, since 12 + 598 + 7 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7193124 + 5405625 = 2682^2 + 2325^2 .

It is not a de Polignac number, because 12598749 - 2¹⁷ = 12467677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12598739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 699922 + ... + 699939.

Almost surely, 2^12598749 is an apocalyptic number.

It is an amenable number.

12598749 is a deficient number, since it is larger than the sum of its proper divisors (5599457).

12598749 is a wasteful number, since it uses less digits than its factorization.

12598749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399867 (or 1399864 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 12598749 is about 3549.4716508235. The cubic root of 12598749 is about 232.6889757382.

The spelling of 12598749 in words is "twelve million, five hundred ninety-eight thousand, seven hundred forty-nine".