12651489 has 6 divisors (see below), whose sum is σ = 18274386. Its totient is φ = 8434320.

The previous prime is 12651487. The next prime is 12651491. The reversal of 12651489 is 98415621.

12651489 is a `hidden beast` number, since 126 + 51 + 489 = 666.

It is an interprime number because it is at equal distance from previous prime (12651487) and next prime (12651491).

It can be written as a sum of positive squares in only one way, i.e., 11289600 + 1361889 = 3360^2 + 1167^2 .

It is not a de Polignac number, because 12651489 - 2¹ = 12651487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12651481) 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, 702852 + ... + 702869.

It is an arithmetic number, because the mean of its divisors is an integer number (3045731).

Almost surely, 2^12651489 is an apocalyptic number.

It is an amenable number.

12651489 is a deficient number, since it is larger than the sum of its proper divisors (5622897).

12651489 is a wasteful number, since it uses less digits than its factorization.

12651489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405727 (or 1405724 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 12651489 is about 3556.8931667960. The cubic root of 12651489 is about 233.0132124861.

It can be divided in two parts, 126 and 51489, that added together give a palindrome (51615).

The spelling of 12651489 in words is "twelve million, six hundred fifty-one thousand, four hundred eighty-nine".