40040535 has 8 divisors (see below), whose sum is σ = 64064880. Its totient is φ = 21354944.

The previous prime is 40040531. The next prime is 40040537. The reversal of 40040535 is 53504004.

It is a happy number.

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 40040535 - 2² = 40040531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040531) 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, 1334670 + ... + 1334699.

It is an arithmetic number, because the mean of its divisors is an integer number (8008110).

Almost surely, 2^40040535 is an apocalyptic number.

40040535 is a deficient number, since it is larger than the sum of its proper divisors (24024345).

40040535 is a wasteful number, since it uses less digits than its factorization.

40040535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669377.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40040535 is about 6327.7590820132. The cubic root of 40040535 is about 342.1106734595.

Adding to 40040535 its reverse (53504004), we get a palindrome (93544539).

The spelling of 40040535 in words is "forty million, forty thousand, five hundred thirty-five".