14871989 has 12 divisors (see below), whose sum is σ = 16542540. Its totient is φ = 13358400.

The previous prime is 14871979. The next prime is 14872009. The reversal of 14871989 is 98917841.

It can be written as a sum of positive squares in 2 ways, for example, as 4695889 + 10176100 = 2167^2 + 3190^2 .

It is not a de Polignac number, because 14871989 - 2⁴ = 14871973 is a prime.

It is a super-2 number, since 2×14871989² = 442352113632242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14871919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10079 + ... + 11459.

It is an arithmetic number, because the mean of its divisors is an integer number (1378545).

Almost surely, 2^14871989 is an apocalyptic number.

It is an amenable number.

14871989 is a deficient number, since it is larger than the sum of its proper divisors (1670551).

14871989 is a wasteful number, since it uses less digits than its factorization.

14871989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1481 counting only the distinct ones).

The product of its digits is 145152, while the sum is 47.

The square root of 14871989 is about 3856.4217870975. The cubic root of 14871989 is about 245.9176415866.

The spelling of 14871989 in words is "fourteen million, eight hundred seventy-one thousand, nine hundred eighty-nine".