1198099679 has 4 divisors (see below), whose sum is σ = 1369256784. Its totient is φ = 1026942576.

The previous prime is 1198099631. The next prime is 1198099691. The reversal of 1198099679 is 9769908911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9769908911 = 7 ⋅1395701273.

It is a cyclic number.

It is not a de Polignac number, because 1198099679 - 2⁸ = 1198099423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198099619) 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, 85578542 + ... + 85578555.

It is an arithmetic number, because the mean of its divisors is an integer number (342314196).

Almost surely, 2^1198099679 is an apocalyptic number.

1198099679 is a deficient number, since it is larger than the sum of its proper divisors (171157105).

1198099679 is an equidigital number, since it uses as much as digits as its factorization.

1198099679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171157104.

The product of its (nonzero) digits is 2204496, while the sum is 59.

The square root of 1198099679 is about 34613.5765126922. The cubic root of 1198099679 is about 1062.0973304870.

The spelling of 1198099679 in words is "one billion, one hundred ninety-eight million, ninety-nine thousand, six hundred seventy-nine".