13154989 has 4 divisors (see below), whose sum is σ = 13197600. Its totient is φ = 13112380.

The previous prime is 13154963. The next prime is 13155013. The reversal of 13154989 is 98945131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98945131 = 67 ⋅1476793.

It is a cyclic number.

It is not a de Polignac number, because 13154989 - 2¹⁹ = 12630701 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 (13154929) 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 3 ways as a sum of consecutive naturals, for example, 20839 + ... + 21460.

It is an arithmetic number, because the mean of its divisors is an integer number (3299400).

Almost surely, 2^13154989 is an apocalyptic number.

It is an amenable number.

13154989 is a deficient number, since it is larger than the sum of its proper divisors (42611).

13154989 is an equidigital number, since it uses as much as digits as its factorization.

13154989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42610.

The product of its digits is 38880, while the sum is 40.

The square root of 13154989 is about 3626.9807002519. The cubic root of 13154989 is about 236.0642181363.

The spelling of 13154989 in words is "thirteen million, one hundred fifty-four thousand, nine hundred eighty-nine".