11889547 has 2 divisors, whose sum is σ = 11889548. Its totient is φ = 11889546.

The previous prime is 11889539. The next prime is 11889569. The reversal of 11889547 is 74598811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11889547 - 2³ = 11889539 is a prime.

It is a super-2 number, since 2×11889547² = 282722655730418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11889587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5944773 + 5944774.

It is an arithmetic number, because the mean of its divisors is an integer number (5944774).

Almost surely, 2^11889547 is an apocalyptic number.

11889547 is a deficient number, since it is larger than the sum of its proper divisors (1).

11889547 is an equidigital number, since it uses as much as digits as its factorization.

11889547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 43.

The square root of 11889547 is about 3448.1222426126. The cubic root of 11889547 is about 228.2382538172.

The spelling of 11889547 in words is "eleven million, eight hundred eighty-nine thousand, five hundred forty-seven".