78983289 has 32 divisors (see below), whose sum is σ = 145889280. Its totient is φ = 41029200.

The previous prime is 78983287. The next prime is 78983291. The reversal of 78983289 is 98238987.

It is an interprime number because it is at equal distance from previous prime (78983287) and next prime (78983291).

It is not a de Polignac number, because 78983289 - 2¹ = 78983287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78983287) 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 31 ways as a sum of consecutive naturals, for example, 16917 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (4559040).

Almost surely, 2^78983289 is an apocalyptic number.

It is an amenable number.

78983289 is a deficient number, since it is larger than the sum of its proper divisors (66905991).

78983289 is a wasteful number, since it uses less digits than its factorization.

78983289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38018 (or 38012 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 78983289 is about 8887.2543004012. The cubic root of 78983289 is about 429.0537856179.

The spelling of 78983289 in words is "seventy-eight million, nine hundred eighty-three thousand, two hundred eighty-nine".