978854723 has 36 divisors (see below), whose sum is σ = 1298917368. Its totient is φ = 729368640.

The previous prime is 978854699. The next prime is 978854741. The reversal of 978854723 is 327458879.

It is not a de Polignac number, because 978854723 - 2⁸ = 978854467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978854753) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 283415 + ... + 286847.

It is an arithmetic number, because the mean of its divisors is an integer number (36081038).

Almost surely, 2^978854723 is an apocalyptic number.

978854723 is a deficient number, since it is larger than the sum of its proper divisors (320062645).

978854723 is a wasteful number, since it uses less digits than its factorization.

978854723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3474 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The square root of 978854723 is about 31286.6540716645. The cubic root of 978854723 is about 992.9013020589.

The spelling of 978854723 in words is "nine hundred seventy-eight million, eight hundred fifty-four thousand, seven hundred twenty-three".