978669312 has 36 divisors (see below), whose sum is σ = 2604689640. Its totient is φ = 326222848.

The previous prime is 978669283. The next prime is 978669313. The reversal of 978669312 is 213966879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978669313) 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 3 ways as a sum of consecutive naturals, for example, 636387 + ... + 637922.

It is an arithmetic number, because the mean of its divisors is an integer number (72352490).

Almost surely, 2^978669312 is an apocalyptic number.

It is an amenable number.

978669312 is an abundant number, since it is smaller than the sum of its proper divisors (1626020328).

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

978669312 is a wasteful number, since it uses less digits than its factorization.

978669312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274328 (or 1274314 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 978669312 is about 31283.6908308467. The cubic root of 978669312 is about 992.8386075501.

The spelling of 978669312 in words is "nine hundred seventy-eight million, six hundred sixty-nine thousand, three hundred twelve".