83078289 has 12 divisors (see below), whose sum is σ = 137145216. Its totient is φ = 47473272.

The previous prime is 83078273. The next prime is 83078291. The reversal of 83078289 is 98287038.

It is not a de Polignac number, because 83078289 - 2⁴ = 83078273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83078299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659289 + ... + 659414.

It is an arithmetic number, because the mean of its divisors is an integer number (11428768).

Almost surely, 2^83078289 is an apocalyptic number.

It is an amenable number.

83078289 is a deficient number, since it is larger than the sum of its proper divisors (54066927).

83078289 is a wasteful number, since it uses less digits than its factorization.

83078289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318716 (or 1318713 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 83078289 is about 9114.7292334989. The cubic root of 83078289 is about 436.3441735046.

The spelling of 83078289 in words is "eighty-three million, seventy-eight thousand, two hundred eighty-nine".