90082191 has 16 divisors (see below), whose sum is σ = 125591040. Its totient is φ = 57324960.

The previous prime is 90082163. The next prime is 90082231. The reversal of 90082191 is 19128009.

It is not a de Polignac number, because 90082191 - 2¹¹ = 90080143 is a prime.

It is a super-2 number, since 2×90082191² = 16229602270720962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90082121) 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, 42505 + ... + 44573.

It is an arithmetic number, because the mean of its divisors is an integer number (7849440).

Almost surely, 2^90082191 is an apocalyptic number.

90082191 is a deficient number, since it is larger than the sum of its proper divisors (35508849).

90082191 is a wasteful number, since it uses less digits than its factorization.

90082191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 90082191 is about 9491.1638380127. The cubic root of 90082191 is about 448.2768520892.

The spelling of 90082191 in words is "ninety million, eighty-two thousand, one hundred ninety-one".