78929845 has 8 divisors (see below), whose sum is σ = 94788000. Its totient is φ = 63095760.

The previous prime is 78929839. The next prime is 78929849. The reversal of 78929845 is 54892987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78929845 - 2¹⁷ = 78798773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78929792 and 78929801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78929849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2230 + ... + 12760.

It is an arithmetic number, because the mean of its divisors is an integer number (11848500).

Almost surely, 2^78929845 is an apocalyptic number.

It is an amenable number.

78929845 is a deficient number, since it is larger than the sum of its proper divisors (15858155).

78929845 is a wasteful number, since it uses less digits than its factorization.

78929845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035.

The product of its digits is 1451520, while the sum is 52.

The square root of 78929845 is about 8884.2470136754. The cubic root of 78929845 is about 428.9569907781.

The spelling of 78929845 in words is "seventy-eight million, nine hundred twenty-nine thousand, eight hundred forty-five".