850190091 has 8 divisors (see below), whose sum is σ = 1133721600. Its totient is φ = 566725992.

The previous prime is 850190083. The next prime is 850190113. The reversal of 850190091 is 190091058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 850190091 - 2³ = 850190083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (850190041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39510 + ... + 57108.

It is an arithmetic number, because the mean of its divisors is an integer number (141715200).

Almost surely, 2^850190091 is an apocalyptic number.

850190091 is a deficient number, since it is larger than the sum of its proper divisors (283531509).

850190091 is a wasteful number, since it uses less digits than its factorization.

850190091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33705.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 850190091 is about 29158.0193257361. The cubic root of 850190091 is about 947.3388464977.

The spelling of 850190091 in words is "eight hundred fifty million, one hundred ninety thousand, ninety-one".