978927798 has 8 divisors (see below), whose sum is σ = 1957855608. Its totient is φ = 326309264.

The previous prime is 978927791. The next prime is 978927839. The reversal of 978927798 is 897729879.

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

978927798 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978927791) 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, 81577311 + ... + 81577322.

It is an arithmetic number, because the mean of its divisors is an integer number (244731951).

Almost surely, 2^978927798 is an apocalyptic number.

978927798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978927798 is a wasteful number, since it uses less digits than its factorization.

978927798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163154638.

The product of its digits is 32006016, while the sum is 66.

The square root of 978927798 is about 31287.8218800862. The cubic root of 978927798 is about 992.9260093199.

The spelling of 978927798 in words is "nine hundred seventy-eight million, nine hundred twenty-seven thousand, seven hundred ninety-eight".