78996879 has 12 divisors (see below), whose sum is σ = 122884216. Its totient is φ = 48613392.

The previous prime is 78996859. The next prime is 78996893. The reversal of 78996879 is 97869987.

It is not a de Polignac number, because 78996879 - 2⁹ = 78996367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78996839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337477 + ... + 337710.

Almost surely, 2^78996879 is an apocalyptic number.

78996879 is a deficient number, since it is larger than the sum of its proper divisors (43887337).

78996879 is a wasteful number, since it uses less digits than its factorization.

78996879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675206 (or 675203 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The square root of 78996879 is about 8888.0188456146. The cubic root of 78996879 is about 429.0783921164.

The spelling of 78996879 in words is "seventy-eight million, nine hundred ninety-six thousand, eight hundred seventy-nine".