978528969 has 24 divisors (see below), whose sum is σ = 1549704000. Its totient is φ = 590055840.

The previous prime is 978528961. The next prime is 978528977. The reversal of 978528969 is 969825879.

978528969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (978528961) and next prime (978528977).

It is not a de Polignac number, because 978528969 - 2³ = 978528961 is a prime.

It is a super-2 number, since 2×978528969² = 1915037886344405922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (978528961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5134 + ... + 44535.

It is an arithmetic number, because the mean of its divisors is an integer number (64571000).

Almost surely, 2^978528969 is an apocalyptic number.

978528969 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

978528969 is a deficient number, since it is larger than the sum of its proper divisors (571175031).

978528969 is a wasteful number, since it uses less digits than its factorization.

978528969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49885 (or 49882 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The square root of 978528969 is about 31281.4476806941. The cubic root of 978528969 is about 992.7911469803.

The spelling of 978528969 in words is "nine hundred seventy-eight million, five hundred twenty-eight thousand, nine hundred sixty-nine".