1197448939 has 4 divisors (see below), whose sum is σ = 1222926624. Its totient is φ = 1171971256.

The previous prime is 1197448897. The next prime is 1197448949. The reversal of 1197448939 is 9398447911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9398447911 = 83341 ⋅112771.

It is a cyclic number.

It is not a de Polignac number, because 1197448939 - 2²³ = 1189060331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1197448939.

It is not an unprimeable number, because it can be changed into a prime (1197448949) 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, 12738772 + ... + 12738865.

It is an arithmetic number, because the mean of its divisors is an integer number (305731656).

Almost surely, 2^1197448939 is an apocalyptic number.

1197448939 is a deficient number, since it is larger than the sum of its proper divisors (25477685).

1197448939 is an equidigital number, since it uses as much as digits as its factorization.

1197448939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25477684.

The product of its digits is 1959552, while the sum is 55.

The square root of 1197448939 is about 34604.1751671673. The cubic root of 1197448939 is about 1061.9050052579.

The spelling of 1197448939 in words is "one billion, one hundred ninety-seven million, four hundred forty-eight thousand, nine hundred thirty-nine".