13984757 has 4 divisors (see below), whose sum is σ = 14467020. Its totient is φ = 13502496.

The previous prime is 13984723. The next prime is 13984769. The reversal of 13984757 is 75748931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4990756 + 8994001 = 2234^2 + 2999^2 .

It is a cyclic number.

It is not a de Polignac number, because 13984757 - 2¹⁰ = 13983733 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 (13984787) 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, 241088 + ... + 241145.

It is an arithmetic number, because the mean of its divisors is an integer number (3616755).

Almost surely, 2^13984757 is an apocalyptic number.

It is an amenable number.

13984757 is a deficient number, since it is larger than the sum of its proper divisors (482263).

13984757 is an equidigital number, since it uses as much as digits as its factorization.

13984757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482262.

The product of its digits is 211680, while the sum is 44.

The square root of 13984757 is about 3739.6199004712. The cubic root of 13984757 is about 240.9267237037.

It can be divided in two parts, 13984 and 757, that added together give a palindrome (14741).

The spelling of 13984757 in words is "thirteen million, nine hundred eighty-four thousand, seven hundred fifty-seven".