40550009 has 8 divisors (see below), whose sum is σ = 42750240. Its totient is φ = 38356416.

The previous prime is 40549997. The next prime is 40550023. The reversal of 40550009 is 90005504.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40550009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40550309) 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, 15569 + ... + 17985.

It is an arithmetic number, because the mean of its divisors is an integer number (5343780).

Almost surely, 2^40550009 is an apocalyptic number.

It is an amenable number.

40550009 is a deficient number, since it is larger than the sum of its proper divisors (2200231).

40550009 is a wasteful number, since it uses less digits than its factorization.

40550009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 40550009 is about 6367.8888966438. Note that the first 4 decimals coincide. The cubic root of 40550009 is about 343.5555628115. Note that the first 4 decimals are identical.

The spelling of 40550009 in words is "forty million, five hundred fifty thousand, nine".