1189447448 has 16 divisors (see below), whose sum is σ = 2548816080. Its totient is φ = 509763168.

The previous prime is 1189447409. The next prime is 1189447453. The reversal of 1189447448 is 8447449811.

It is a junction number, because it is equal to n+sod(n) for n = 1189447396 and 1189447405.

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, 10620011 + ... + 10620122.

It is an arithmetic number, because the mean of its divisors is an integer number (159301005).

Almost surely, 2^1189447448 is an apocalyptic number.

It is an amenable number.

1189447448 is an abundant number, since it is smaller than the sum of its proper divisors (1359368632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1189447448 is a wasteful number, since it uses less digits than its factorization.

1189447448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21240146 (or 21240142 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 50.

The square root of 1189447448 is about 34488.3668502874. The cubic root of 1189447448 is about 1059.5344603383.

The spelling of 1189447448 in words is "one billion, one hundred eighty-nine million, four hundred forty-seven thousand, four hundred forty-eight".