90008101 has 4 divisors (see below), whose sum is σ = 90128704. Its totient is φ = 89887500.

The previous prime is 90008077. The next prime is 90008119. The reversal of 90008101 is 10180009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90008101 - 2²⁵ = 56453669 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 (90008201) 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, 59175 + ... + 60676.

It is an arithmetic number, because the mean of its divisors is an integer number (22532176).

Almost surely, 2^90008101 is an apocalyptic number.

It is an amenable number.

90008101 is a deficient number, since it is larger than the sum of its proper divisors (120603).

90008101 is a wasteful number, since it uses less digits than its factorization.

90008101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120602.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 90008101 is about 9487.2599310865. The cubic root of 90008101 is about 448.1539201263.

It can be divided in two parts, 90008 and 101, that added together give a palindrome (90109).

The spelling of 90008101 in words is "ninety million, eight thousand, one hundred one".