40511009 has 8 divisors (see below), whose sum is σ = 50507328. Its totient is φ = 31566960.

The previous prime is 40510961. The next prime is 40511063. The reversal of 40511009 is 90011504.

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 40511009 - 2¹⁶ = 40445473 is a prime.

It is a super-3 number, since 3×40511009³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40511069) 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, 262982 + ... + 263135.

It is an arithmetic number, because the mean of its divisors is an integer number (6313416).

Almost surely, 2^40511009 is an apocalyptic number.

It is an amenable number.

40511009 is a deficient number, since it is larger than the sum of its proper divisors (9996319).

40511009 is a wasteful number, since it uses less digits than its factorization.

40511009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526135.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 40511009 is about 6364.8259206360. The cubic root of 40511009 is about 343.4453863892.

The spelling of 40511009 in words is "forty million, five hundred eleven thousand, nine".