13999754 has 4 divisors (see below), whose sum is σ = 20999634. Its totient is φ = 6999876.

The previous prime is 13999747. The next prime is 13999757. The reversal of 13999754 is 45799931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45799931 = 683 ⋅67057.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 4108729 = 3145^2 + 2027^2 .

It is a super-2 number, since 2×13999754² = 391986224121032, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13999699 and 13999708.

It is not an unprimeable number, because it can be changed into a prime (13999757) 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, 3499937 + ... + 3499940.

Almost surely, 2^13999754 is an apocalyptic number.

13999754 is a deficient number, since it is larger than the sum of its proper divisors (6999880).

13999754 is an equidigital number, since it uses as much as digits as its factorization.

13999754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999879.

The product of its digits is 306180, while the sum is 47.

The square root of 13999754 is about 3741.6245134968. The cubic root of 13999754 is about 241.0128147545.

The spelling of 13999754 in words is "thirteen million, nine hundred ninety-nine thousand, seven hundred fifty-four".