40108669 has 4 divisors (see below), whose sum is σ = 40142844. Its totient is φ = 40074496.

The previous prime is 40108643. The next prime is 40108687. The reversal of 40108669 is 96680104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29019769 + 11088900 = 5387^2 + 3330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40108669 is a prime.

It is a super-2 number, since 2×40108669² = 3217410657903122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40178669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15262 + ... + 17695.

It is an arithmetic number, because the mean of its divisors is an integer number (10035711).

Almost surely, 2^40108669 is an apocalyptic number.

It is an amenable number.

40108669 is a deficient number, since it is larger than the sum of its proper divisors (34175).

40108669 is a wasteful number, since it uses less digits than its factorization.

40108669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34174.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 40108669 is about 6333.1405321531. The cubic root of 40108669 is about 342.3046115928.

The spelling of 40108669 in words is "forty million, one hundred eight thousand, six hundred sixty-nine".