429981 has 8 divisors (see below), whose sum is σ = 607104. Its totient is φ = 269760.

The previous prime is 429973. The next prime is 429991. The reversal of 429981 is 189924.

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

It is not a de Polignac number, because 429981 - 2³ = 429973 is a prime.

It is a super-2 number, since 2×429981² = 369767320722, which contains 22 as substring.

429981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (429901) 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, 4165 + ... + 4266.

It is an arithmetic number, because the mean of its divisors is an integer number (75888).

2⁴²⁹⁹⁸¹ is an apocalyptic number.

It is an amenable number.

429981 is a deficient number, since it is larger than the sum of its proper divisors (177123).

429981 is a wasteful number, since it uses less digits than its factorization.

429981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8451.

The product of its digits is 5184, while the sum is 33.

The square root of 429981 is about 655.7293649060. The cubic root of 429981 is about 75.4773114288.

The spelling of 429981 in words is "four hundred twenty-nine thousand, nine hundred eighty-one".