1179647899 has 2 divisors, whose sum is σ = 1179647900. Its totient is φ = 1179647898.

The previous prime is 1179647893. The next prime is 1179647999. The reversal of 1179647899 is 9987469711.

It is a weak prime.

It is an emirp because it is prime and its reverse (9987469711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1179647899 - 2³ = 1179647891 is a prime.

It is a super-2 number, since 2×1179647899² = 2783138331230228402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1179647891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589823949 + 589823950.

It is an arithmetic number, because the mean of its divisors is an integer number (589823950).

Almost surely, 2^1179647899 is an apocalyptic number.

1179647899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1179647899 is an equidigital number, since it uses as much as digits as its factorization.

1179647899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 61.

The square root of 1179647899 is about 34346.0026640656. The cubic root of 1179647899 is about 1056.6166894909.

It can be divided in two parts, 11796 and 47899, that added together give a palindrome (59695).

The spelling of 1179647899 in words is "one billion, one hundred seventy-nine million, six hundred forty-seven thousand, eight hundred ninety-nine".