978215079 has 8 divisors (see below), whose sum is σ = 1316476800. Its totient is φ = 646048376.

The previous prime is 978215059. The next prime is 978215081. The reversal of 978215079 is 970512879.

978215079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 978215079 - 2⁸ = 978214823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978215059) 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, 1523379 + ... + 1524020.

It is an arithmetic number, because the mean of its divisors is an integer number (164559600).

Almost surely, 2^978215079 is an apocalyptic number.

978215079 is a deficient number, since it is larger than the sum of its proper divisors (338261721).

978215079 is a wasteful number, since it uses less digits than its factorization.

978215079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047509.

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 978215079 is about 31276.4300872078. The cubic root of 978215079 is about 992.6849806327.

The spelling of 978215079 in words is "nine hundred seventy-eight million, two hundred fifteen thousand, seventy-nine".