40434 has 16 divisors (see below), whose sum is σ = 84672. Its totient is φ = 12848.

The previous prime is 40433. The next prime is 40459. The reversal of 40434 is 43404.

40434 is nontrivially palindromic in base 9.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (40433) 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, 9 + ... + 284.

It is an arithmetic number, because the mean of its divisors is an integer number (5292).

2⁴⁰⁴³⁴ is an apocalyptic number.

40434 is an abundant number, since it is smaller than the sum of its proper divisors (44238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42336).

40434 is a wasteful number, since it uses less digits than its factorization.

40434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40434 is about 201.0820727962. The cubic root of 40434 is about 34.3227625316.

Adding to 40434 its reverse (43404), we get a palindrome (83838).

It can be divided in two parts, 40 and 434, that added together give a palindrome (474).

The spelling of 40434 in words is "forty thousand, four hundred thirty-four".