4008950905 has 4 divisors (see below), whose sum is σ = 4810741092. Its totient is φ = 3207160720.

The previous prime is 4008950903. The next prime is 4008950909. The reversal of 4008950905 is 5090598004.

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 1202494329 + 2806456576 = 34677^2 + 52976^2 .

It is not a de Polignac number, because 4008950905 - 2¹ = 4008950903 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4008950903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400895086 + ... + 400895095.

It is an arithmetic number, because the mean of its divisors is an integer number (1202685273).

Almost surely, 2^4008950905 is an apocalyptic number.

It is an amenable number.

4008950905 is a deficient number, since it is larger than the sum of its proper divisors (801790187).

4008950905 is an equidigital number, since it uses as much as digits as its factorization.

4008950905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801790186.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 4008950905 is about 63316.2767777765. The cubic root of 4008950905 is about 1588.5842262010.

The spelling of 4008950905 in words is "four billion, eight million, nine hundred fifty thousand, nine hundred five".