1197439049 has 4 divisors (see below), whose sum is σ = 1204360836. Its totient is φ = 1190517264.

The previous prime is 1197439037. The next prime is 1197439057. The reversal of 1197439049 is 9409347911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 825527824 + 371911225 = 28732^2 + 19285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197439049 - 2²⁰ = 1196390473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1197438994 and 1197439012.

It is not an unprimeable number, because it can be changed into a prime (1197439079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3460634 + ... + 3460979.

It is an arithmetic number, because the mean of its divisors is an integer number (301090209).

Almost surely, 2^1197439049 is an apocalyptic number.

It is an amenable number.

1197439049 is a deficient number, since it is larger than the sum of its proper divisors (6921787).

1197439049 is an equidigital number, since it uses as much as digits as its factorization.

1197439049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921786.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1197439049 is about 34604.0322650410. The cubic root of 1197439049 is about 1061.9020817458.

The spelling of 1197439049 in words is "one billion, one hundred ninety-seven million, four hundred thirty-nine thousand, forty-nine".