978822885 has 16 divisors (see below), whose sum is σ = 1566668160. Its totient is φ = 521855040.

The previous prime is 978822883. The next prime is 978822917. The reversal of 978822885 is 588228879.

It is not a de Polignac number, because 978822885 - 2¹ = 978822883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978822883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39955 + ... + 59615.

It is an arithmetic number, because the mean of its divisors is an integer number (97916760).

Almost surely, 2^978822885 is an apocalyptic number.

It is an amenable number.

978822885 is a deficient number, since it is larger than the sum of its proper divisors (587845275).

978822885 is a wasteful number, since it uses less digits than its factorization.

978822885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22988.

The product of its digits is 5160960, while the sum is 57.

The square root of 978822885 is about 31286.1452563271. The cubic root of 978822885 is about 992.8905369836.

The spelling of 978822885 in words is "nine hundred seventy-eight million, eight hundred twenty-two thousand, eight hundred eighty-five".