90911103 has 4 divisors (see below), whose sum is σ = 121214808. Its totient is φ = 60607400.

The previous prime is 90911101. The next prime is 90911129. The reversal of 90911103 is 30111909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30111909 = 3 ⋅10037303.

It is a cyclic number.

It is not a de Polignac number, because 90911103 - 2¹ = 90911101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90911101) 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 3 ways as a sum of consecutive naturals, for example, 15151848 + ... + 15151853.

It is an arithmetic number, because the mean of its divisors is an integer number (30303702).

Almost surely, 2^90911103 is an apocalyptic number.

90911103 is a deficient number, since it is larger than the sum of its proper divisors (30303705).

90911103 is a wasteful number, since it uses less digits than its factorization.

90911103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30303704.

The product of its (nonzero) digits is 243, while the sum is 24.

The square root of 90911103 is about 9534.7314068095. The cubic root of 90911103 is about 449.6476303240.

The spelling of 90911103 in words is "ninety million, nine hundred eleven thousand, one hundred three".