40535569 has 8 divisors (see below), whose sum is σ = 44046080. Its totient is φ = 37162800.

The previous prime is 40535567. The next prime is 40535587. The reversal of 40535569 is 96553504.

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

It is not a de Polignac number, because 40535569 - 2¹ = 40535567 is a prime.

It is a super-2 number, since 2×40535569² = 3286264708307522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40535563) 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, 33822 + ... + 34999.

It is an arithmetic number, because the mean of its divisors is an integer number (5505760).

Almost surely, 2^40535569 is an apocalyptic number.

It is an amenable number.

40535569 is a deficient number, since it is larger than the sum of its proper divisors (3510511).

40535569 is a wasteful number, since it uses less digits than its factorization.

40535569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68871.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 40535569 is about 6366.7549819355. The cubic root of 40535569 is about 343.5147775241.

The spelling of 40535569 in words is "forty million, five hundred thirty-five thousand, five hundred sixty-nine".