13989434 has 16 divisors (see below), whose sum is σ = 22161600. Its totient is φ = 6604704.

The previous prime is 13989433. The next prime is 13989449. The reversal of 13989434 is 43498931.

It is a junction number, because it is equal to n+sod(n) for n = 13989391 and 13989400.

It is not an unprimeable number, because it can be changed into a prime (13989433) 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, 21299 + ... + 21945.

It is an arithmetic number, because the mean of its divisors is an integer number (1385100).

Almost surely, 2^13989434 is an apocalyptic number.

13989434 is a deficient number, since it is larger than the sum of its proper divisors (8172166).

13989434 is a wasteful number, since it uses less digits than its factorization.

13989434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237.

The product of its digits is 93312, while the sum is 41.

The square root of 13989434 is about 3740.2451791293. The cubic root of 13989434 is about 240.9535788645.

The spelling of 13989434 in words is "thirteen million, nine hundred eighty-nine thousand, four hundred thirty-four".