429989 has 16 divisors (see below), whose sum is σ = 535680. Its totient is φ = 336960.

The previous prime is 429973. The next prime is 429991. The reversal of 429989 is 989924.

429989 = T₃₄₇ + T₃₄₈ + ... + T₃₅₃.

It is a cyclic number.

It is not a de Polignac number, because 429989 - 2⁴ = 429973 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 (429929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7019 + ... + 7079.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁴²⁹⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

429989 is a deficient number, since it is larger than the sum of its proper divisors (105691).

429989 is a wasteful number, since it uses less digits than its factorization.

429989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its digits is 46656, while the sum is 41.

The square root of 429989 is about 655.7354649552. The cubic root of 429989 is about 75.4777795229.

The spelling of 429989 in words is "four hundred twenty-nine thousand, nine hundred eighty-nine".