13749438 has 8 divisors (see below), whose sum is σ = 27498888. Its totient is φ = 4583144.

The previous prime is 13749403. The next prime is 13749443. The reversal of 13749438 is 83494731.

It is a sphenic number, since it is the product of 3 distinct primes.

13749438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13749396 and 13749405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145781 + ... + 1145792.

It is an arithmetic number, because the mean of its divisors is an integer number (3437361).

Almost surely, 2^13749438 is an apocalyptic number.

13749438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13749438 is a wasteful number, since it uses less digits than its factorization.

13749438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291578.

The product of its digits is 72576, while the sum is 39.

The square root of 13749438 is about 3708.0234627089. The cubic root of 13749438 is about 239.5677288354.

The spelling of 13749438 in words is "thirteen million, seven hundred forty-nine thousand, four hundred thirty-eight".