90289281101 has 4 divisors (see below), whose sum is σ = 90298026012. Its totient is φ = 90280536192.

The previous prime is 90289280993. The next prime is 90289281139. The reversal of 90289281101 is 10118298209.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10118298209 = 19 ⋅532542011.

It can be written as a sum of positive squares in 2 ways, for example, as 11482194025 + 78807087076 = 107155^2 + 280726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90289281101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90289281701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4356950 + ... + 4377623.

It is an arithmetic number, because the mean of its divisors is an integer number (22574506503).

Almost surely, 2^90289281101 is an apocalyptic number.

It is an amenable number.

90289281101 is a deficient number, since it is larger than the sum of its proper divisors (8744911).

90289281101 is a wasteful number, since it uses less digits than its factorization.

90289281101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744910.

The product of its (nonzero) digits is 20736, while the sum is 41.

The spelling of 90289281101 in words is "ninety billion, two hundred eighty-nine million, two hundred eighty-one thousand, one hundred one".