4805090091 has 6 divisors (see below), whose sum is σ = 6940685700. Its totient is φ = 3203393388.

The previous prime is 4805090077. The next prime is 4805090099. The reversal of 4805090091 is 1900905084.

4805090091 is a `hidden beast` number, since 480 + 5 + 0 + 90 + 0 + 91 = 666.

It is not a de Polignac number, because 4805090091 - 2²¹ = 4802992939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4805090099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 266949441 + ... + 266949458.

It is an arithmetic number, because the mean of its divisors is an integer number (1156780950).

Almost surely, 2^4805090091 is an apocalyptic number.

4805090091 is a deficient number, since it is larger than the sum of its proper divisors (2135595609).

4805090091 is a wasteful number, since it uses less digits than its factorization.

4805090091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533898905 (or 533898902 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 4805090091 is about 69318.7571368674. The cubic root of 4805090091 is about 1687.4613906557.

The spelling of 4805090091 in words is "four billion, eight hundred five million, ninety thousand, ninety-one".