13429989 has 16 divisors (see below), whose sum is σ = 20053440. Its totient is φ = 8882640.

The previous prime is 13429967. The next prime is 13430003. The reversal of 13429989 is 98992431.

13429989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13429989 - 2¹³ = 13421797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13429909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1639 + ... + 5435.

It is an arithmetic number, because the mean of its divisors is an integer number (1253340).

Almost surely, 2^13429989 is an apocalyptic number.

It is an amenable number.

13429989 is a deficient number, since it is larger than the sum of its proper divisors (6623451).

13429989 is a wasteful number, since it uses less digits than its factorization.

13429989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937 (or 3931 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 13429989 is about 3664.6949395550. The cubic root of 13429989 is about 237.6978311035.

The spelling of 13429989 in words is "thirteen million, four hundred twenty-nine thousand, nine hundred eighty-nine".