13980911 has 8 divisors (see below), whose sum is σ = 16134144. Its totient is φ = 11866680.

The previous prime is 13980881. The next prime is 13980913. The reversal of 13980911 is 11908931.

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

It is not a de Polignac number, because 13980911 - 2¹⁴ = 13964527 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 (13980913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8975 + ... + 10416.

It is an arithmetic number, because the mean of its divisors is an integer number (2016768).

Almost surely, 2^13980911 is an apocalyptic number.

13980911 is a deficient number, since it is larger than the sum of its proper divisors (2153233).

13980911 is a wasteful number, since it uses less digits than its factorization.

13980911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19501.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 13980911 is about 3739.1056417277. The cubic root of 13980911 is about 240.9046356275.

The spelling of 13980911 in words is "thirteen million, nine hundred eighty thousand, nine hundred eleven".