40548909 has 8 divisors (see below), whose sum is σ = 54171072. Its totient is φ = 26979680.

The previous prime is 40548901. The next prime is 40548919. The reversal of 40548909 is 90984504.

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 40548909 - 2³ = 40548901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40548901) 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, 11409 + ... + 14534.

It is an arithmetic number, because the mean of its divisors is an integer number (6771384).

Almost surely, 2^40548909 is an apocalyptic number.

It is an amenable number.

40548909 is a deficient number, since it is larger than the sum of its proper divisors (13622163).

40548909 is a wasteful number, since it uses less digits than its factorization.

40548909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26467.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 40548909 is about 6367.8025252044. The cubic root of 40548909 is about 343.5524562398.

The spelling of 40548909 in words is "forty million, five hundred forty-eight thousand, nine hundred nine".