1172879798 has 24 divisors (see below), whose sum is σ = 1822931712. Its totient is φ = 565929504.

The previous prime is 1172879791. The next prime is 1172879801. The reversal of 1172879798 is 8979782711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172879791) 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 11 ways as a sum of consecutive naturals, for example, 346040 + ... + 349412.

It is an arithmetic number, because the mean of its divisors is an integer number (75955488).

Almost surely, 2^1172879798 is an apocalyptic number.

1172879798 is a deficient number, since it is larger than the sum of its proper divisors (650051914).

1172879798 is a wasteful number, since it uses less digits than its factorization.

1172879798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576 (or 3539 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 59.

The square root of 1172879798 is about 34247.3327136582. The cubic root of 1172879798 is about 1054.5920715750.

The spelling of 1172879798 in words is "one billion, one hundred seventy-two million, eight hundred seventy-nine thousand, seven hundred ninety-eight".