13749671 has 6 divisors (see below), whose sum is σ = 14888880. Its totient is φ = 12691848.

The previous prime is 13749667. The next prime is 13749679. The reversal of 13749671 is 17694731.

It is not a de Polignac number, because 13749671 - 2² = 13749667 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 (13749679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40511 + ... + 40848.

It is an arithmetic number, because the mean of its divisors is an integer number (2481480).

Almost surely, 2^13749671 is an apocalyptic number.

13749671 is a deficient number, since it is larger than the sum of its proper divisors (1139209).

13749671 is an equidigital number, since it uses as much as digits as its factorization.

13749671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81385 (or 81372 counting only the distinct ones).

The product of its digits is 31752, while the sum is 38.

The square root of 13749671 is about 3708.0548809315. The cubic root of 13749671 is about 239.5690820777.

The spelling of 13749671 in words is "thirteen million, seven hundred forty-nine thousand, six hundred seventy-one".