13749853 has 4 divisors (see below), whose sum is σ = 14807548. Its totient is φ = 12692160.

The previous prime is 13749839. The next prime is 13749859. The reversal of 13749853 is 35894731.

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 8450649 + 5299204 = 2907^2 + 2302^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13749853 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 (13749859) 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, 528828 + ... + 528853.

It is an arithmetic number, because the mean of its divisors is an integer number (3701887).

Almost surely, 2^13749853 is an apocalyptic number.

13749853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13749853 is a deficient number, since it is larger than the sum of its proper divisors (1057695).

13749853 is a wasteful number, since it uses less digits than its factorization.

13749853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057694.

The product of its digits is 90720, while the sum is 40.

The square root of 13749853 is about 3708.0794220189. The cubic root of 13749853 is about 239.5701391062.

The spelling of 13749853 in words is "thirteen million, seven hundred forty-nine thousand, eight hundred fifty-three".