11890089 has 12 divisors (see below), whose sum is σ = 18185076. Its totient is φ = 7460352.

The previous prime is 11890079. The next prime is 11890091. The reversal of 11890089 is 98009811.

It can be written as a sum of positive squares in 2 ways, for example, as 7617600 + 4272489 = 2760^2 + 2067^2 .

It is not a de Polignac number, because 11890089 - 2⁷ = 11889961 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11890009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38704 + ... + 39009.

It is an arithmetic number, because the mean of its divisors is an integer number (1515423).

Almost surely, 2^11890089 is an apocalyptic number.

It is an amenable number.

11890089 is a deficient number, since it is larger than the sum of its proper divisors (6294987).

11890089 is a wasteful number, since it uses less digits than its factorization.

11890089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77736 (or 77733 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 11890089 is about 3448.2008352183. The cubic root of 11890089 is about 228.2417219407.

It can be divided in two parts, 11 and 890089, that multiplied together give a palindrome (9790979).

The spelling of 11890089 in words is "eleven million, eight hundred ninety thousand, eighty-nine".