13791791 has 8 divisors (see below), whose sum is σ = 15365280. Its totient is φ = 12291552.

The previous prime is 13791779. The next prime is 13791793. The reversal of 13791791 is 19719731.

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

It is not a de Polignac number, because 13791791 - 2¹⁰ = 13790767 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 (13791793) 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 in 7 ways as a sum of consecutive naturals, for example, 17915 + ... + 18668.

It is an arithmetic number, because the mean of its divisors is an integer number (1920660).

Almost surely, 2^13791791 is an apocalyptic number.

13791791 is a deficient number, since it is larger than the sum of its proper divisors (1573489).

13791791 is a wasteful number, since it uses less digits than its factorization.

13791791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36625.

The product of its digits is 11907, while the sum is 38.

The square root of 13791791 is about 3713.7300655810. The cubic root of 13791791 is about 239.8134603740.

The spelling of 13791791 in words is "thirteen million, seven hundred ninety-one thousand, seven hundred ninety-one".