40434509 has 8 divisors (see below), whose sum is σ = 41963520. Its totient is φ = 38919600.

The previous prime is 40434503. The next prime is 40434533. The reversal of 40434509 is 90543404.

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

It is a cyclic number.

It is not a de Polignac number, because 40434509 - 2²⁰ = 39385933 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 (40434503) 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, 2507 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (5245440).

Almost surely, 2^40434509 is an apocalyptic number.

It is an amenable number.

40434509 is a deficient number, since it is larger than the sum of its proper divisors (1529011).

40434509 is a wasteful number, since it uses less digits than its factorization.

40434509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7051.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40434509 is about 6358.8134899524. The cubic root of 40434509 is about 343.2290655404.

The spelling of 40434509 in words is "forty million, four hundred thirty-four thousand, five hundred nine".