13991546 has 8 divisors (see below), whose sum is σ = 21008064. Its totient is φ = 6988860.

The previous prime is 13991533. The next prime is 13991557. The reversal of 13991546 is 64519931.

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

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, 380 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (2626008).

Almost surely, 2^13991546 is an apocalyptic number.

13991546 is a deficient number, since it is larger than the sum of its proper divisors (7016518).

13991546 is a wasteful number, since it uses less digits than its factorization.

13991546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6916.

The product of its digits is 29160, while the sum is 38.

The square root of 13991546 is about 3740.5275029065. The cubic root of 13991546 is about 240.9657039286.

The spelling of 13991546 in words is "thirteen million, nine hundred ninety-one thousand, five hundred forty-six".