11889005 has 4 divisors (see below), whose sum is σ = 14266812. Its totient is φ = 9511200.

The previous prime is 11888983. The next prime is 11889011. The reversal of 11889005 is 50098811.

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: 50098811 = 7 ⋅7156973.

It can be written as a sum of positive squares in 2 ways, for example, as 7912969 + 3976036 = 2813^2 + 1994^2 .

It is not a de Polignac number, because 11889005 - 2⁸ = 11888749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188896 + ... + 1188905.

It is an arithmetic number, because the mean of its divisors is an integer number (3566703).

Almost surely, 2^11889005 is an apocalyptic number.

It is an amenable number.

11889005 is a deficient number, since it is larger than the sum of its proper divisors (2377807).

11889005 is an equidigital number, since it uses as much as digits as its factorization.

11889005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377806.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 11889005 is about 3448.0436482156. The cubic root of 11889005 is about 228.2347855882.

The spelling of 11889005 in words is "eleven million, eight hundred eighty-nine thousand, five".