978097854 has 16 divisors (see below), whose sum is σ = 1957222800. Its totient is φ = 325861440.

The previous prime is 978097853. The next prime is 978097859. The reversal of 978097854 is 458790879.

It is a junction number, because it is equal to n+sod(n) for n = 978097794 and 978097803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978097853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30127 + ... + 53514.

It is an arithmetic number, because the mean of its divisors is an integer number (122326425).

Almost surely, 2^978097854 is an apocalyptic number.

978097854 is an abundant number, since it is smaller than the sum of its proper divisors (979124946).

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

978097854 is a wasteful number, since it uses less digits than its factorization.

978097854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85595.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The square root of 978097854 is about 31274.5560160332. The cubic root of 978097854 is about 992.6453260455.

The spelling of 978097854 in words is "nine hundred seventy-eight million, ninety-seven thousand, eight hundred fifty-four".