13498649 has 4 divisors (see below), whose sum is σ = 13683636. Its totient is φ = 13313664.

The previous prime is 13498643. The next prime is 13498657. The reversal of 13498649 is 94689431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94689431 = 6883 ⋅13757.

It can be written as a sum of positive squares in 2 ways, for example, as 4305625 + 9193024 = 2075^2 + 3032^2 .

It is a cyclic number.

It is not a de Polignac number, because 13498649 - 2⁸ = 13498393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13498643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92384 + ... + 92529.

It is an arithmetic number, because the mean of its divisors is an integer number (3420909).

Almost surely, 2^13498649 is an apocalyptic number.

It is an amenable number.

13498649 is a deficient number, since it is larger than the sum of its proper divisors (184987).

13498649 is an equidigital number, since it uses as much as digits as its factorization.

13498649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184986.

The product of its digits is 186624, while the sum is 44.

The square root of 13498649 is about 3674.0507617615. The cubic root of 13498649 is about 238.1022146457.

The spelling of 13498649 in words is "thirteen million, four hundred ninety-eight thousand, six hundred forty-nine".