40911009 has 16 divisors (see below), whose sum is σ = 58644480. Its totient is φ = 25287120.

The previous prime is 40910999. The next prime is 40911023. The reversal of 40911009 is 90011904.

It is not a de Polignac number, because 40911009 - 2⁵ = 40910977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40911009.

It is not an unprimeable number, because it can be changed into a prime (40911109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4957 + ... + 10314.

It is an arithmetic number, because the mean of its divisors is an integer number (3665280).

Almost surely, 2^40911009 is an apocalyptic number.

It is an amenable number.

40911009 is a deficient number, since it is larger than the sum of its proper divisors (17733471).

40911009 is a wasteful number, since it uses less digits than its factorization.

40911009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 40911009 is about 6396.1714329746. The cubic root of 40911009 is about 344.5720634015.

The spelling of 40911009 in words is "forty million, nine hundred eleven thousand, nine".