40434534 has 96 divisors (see below), whose sum is σ = 108725760. Its totient is φ = 10596096.

The previous prime is 40434533. The next prime is 40434539. The reversal of 40434534 is 43543404.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40434498 and 40434507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40434533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91887 + ... + 92325.

It is an arithmetic number, because the mean of its divisors is an integer number (1132560).

Almost surely, 2^40434534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40434534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54362880).

40434534 is an abundant number, since it is smaller than the sum of its proper divisors (68291226).

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

40434534 is a wasteful number, since it uses less digits than its factorization.

40434534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 40434534 is about 6358.8154557276. The cubic root of 40434534 is about 343.2291362781.

Adding to 40434534 its reverse (43543404), we get a palindrome (83977938).

The spelling of 40434534 in words is "forty million, four hundred thirty-four thousand, five hundred thirty-four".