12898739 has 16 divisors (see below), whose sum is σ = 15617280. Its totient is φ = 10406880.

The previous prime is 12898729. The next prime is 12898741. The reversal of 12898739 is 93789821.

12898739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12898739 - 2¹² = 12894643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12898693 and 12898702.

It is not an unprimeable number, because it can be changed into a prime (12898729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38804 + ... + 39134.

It is an arithmetic number, because the mean of its divisors is an integer number (976080).

Almost surely, 2^12898739 is an apocalyptic number.

12898739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12898739 is a deficient number, since it is larger than the sum of its proper divisors (2718541).

12898739 is a wasteful number, since it uses less digits than its factorization.

12898739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650.

The product of its digits is 217728, while the sum is 47.

The square root of 12898739 is about 3591.4814492073. The cubic root of 12898739 is about 234.5213677503.

The spelling of 12898739 in words is "twelve million, eight hundred ninety-eight thousand, seven hundred thirty-nine".