10890001 has 4 divisors (see below), whose sum is σ = 10900404. Its totient is φ = 10879600.

The previous prime is 10889987. The next prime is 10890023. The reversal of 10890001 is 10009801.

It is a Cunningham number, because it is equal to 3300²+1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10009801 = 223 ⋅44887.

It can be written as a sum of positive squares in 2 ways, for example, as 9985600 + 904401 = 3160^2 + 951^2 .

It is a cyclic number.

It is not a de Polignac number, because 10890001 - 2¹⁵ = 10857233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10890101) 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, 3430 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (2725101).

Almost surely, 2^10890001 is an apocalyptic number.

It is an amenable number.

10890001 is a deficient number, since it is larger than the sum of its proper divisors (10403).

10890001 is an equidigital number, since it uses as much as digits as its factorization.

10890001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402.

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

The square root of 10890001 is about 3300.0001515151. Note that the first 3 decimals coincide. The cubic root of 10890001 is about 221.6542042353.

Adding to 10890001 its reverse (10009801), we get a palindrome (20899802).

It can be divided in two parts, 108 and 90001, that added together give a palindrome (90109).

The spelling of 10890001 in words is "ten million, eight hundred ninety thousand, one".