13991126 has 8 divisors (see below), whose sum is σ = 21194784. Its totient is φ = 6926200.

The previous prime is 13991123. The next prime is 13991129. The reversal of 13991126 is 62119931.

It is an interprime number because it is at equal distance from previous prime (13991123) and next prime (13991129).

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

It is a junction number, because it is equal to n+sod(n) for n = 13991092 and 13991101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13991123) 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, 34430 + ... + 34833.

It is an arithmetic number, because the mean of its divisors is an integer number (2649348).

Almost surely, 2^13991126 is an apocalyptic number.

13991126 is a deficient number, since it is larger than the sum of its proper divisors (7203658).

13991126 is a wasteful number, since it uses less digits than its factorization.

13991126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69366.

The product of its digits is 2916, while the sum is 32.

The square root of 13991126 is about 3740.4713606710. The cubic root of 13991126 is about 240.9632927915.

The spelling of 13991126 in words is "thirteen million, nine hundred ninety-one thousand, one hundred twenty-six".