89901091 has 16 divisors (see below), whose sum is σ = 105110784. Its totient is φ = 75295584.

The previous prime is 89901067. The next prime is 89901101. The reversal of 89901091 is 19010998.

It is not a de Polignac number, because 89901091 - 2⁷ = 89900963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89901091.

It is not an unprimeable number, because it can be changed into a prime (89901001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164080 + ... + 164626.

It is an arithmetic number, because the mean of its divisors is an integer number (6569424).

Almost surely, 2^89901091 is an apocalyptic number.

89901091 is a deficient number, since it is larger than the sum of its proper divisors (15209693).

89901091 is a wasteful number, since it uses less digits than its factorization.

89901091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 89901091 is about 9481.6185854526. The cubic root of 89901091 is about 447.9762473456.

It can be divided in two parts, 8 and 9901091, that added together give a palindrome (9901099).

The spelling of 89901091 in words is "eighty-nine million, nine hundred one thousand, ninety-one".