978854258 has 6 divisors (see below), whose sum is σ = 1468347759. Its totient is φ = 489405006.

The previous prime is 978854249. The next prime is 978854269. The reversal of 978854258 is 852458879.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 489427129 + 489427129 = 22123^2 + 22123^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=22123.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 33185 + ... + 55307.

Almost surely, 2^978854258 is an apocalyptic number.

978854258 is a deficient number, since it is larger than the sum of its proper divisors (489493501).

978854258 is an frugal number, since it uses more digits than its factorization.

978854258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44248 (or 22125 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 56.

The square root of 978854258 is about 31286.6466403800. The cubic root of 978854258 is about 992.9011448346.

It can be divided in two parts, 9788 and 54258, that added together give a palindrome (64046).

The spelling of 978854258 in words is "nine hundred seventy-eight million, eight hundred fifty-four thousand, two hundred fifty-eight".