13989524 has 6 divisors (see below), whose sum is σ = 24481674. Its totient is φ = 6994760.

The previous prime is 13989523. The next prime is 13989541. The reversal of 13989524 is 42598931.

It can be written as a sum of positive squares in only one way, i.e., 7739524 + 6250000 = 2782^2 + 2500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13989523) 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 as a sum of consecutive naturals, namely, 1748687 + ... + 1748694.

It is an arithmetic number, because the mean of its divisors is an integer number (4080279).

Almost surely, 2^13989524 is an apocalyptic number.

It is an amenable number.

13989524 is a deficient number, since it is larger than the sum of its proper divisors (10492150).

13989524 is a wasteful number, since it uses less digits than its factorization.

13989524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497385 (or 3497383 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 13989524 is about 3740.2572104068. The cubic root of 13989524 is about 240.9540955825.

The spelling of 13989524 in words is "thirteen million, nine hundred eighty-nine thousand, five hundred twenty-four".