289178061 has 4 divisors (see below), whose sum is σ = 385570752. Its totient is φ = 192785372.

The previous prime is 289178047. The next prime is 289178083. The reversal of 289178061 is 160871982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 289178061 - 2⁶ = 289177997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289178161) 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, 48196341 + ... + 48196346.

It is an arithmetic number, because the mean of its divisors is an integer number (96392688).

Almost surely, 2^289178061 is an apocalyptic number.

It is an amenable number.

289178061 is a deficient number, since it is larger than the sum of its proper divisors (96392691).

289178061 is an equidigital number, since it uses as much as digits as its factorization.

289178061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96392690.

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 289178061 is about 17005.2362818045. The cubic root of 289178061 is about 661.2846580915.

The spelling of 289178061 in words is "two hundred eighty-nine million, one hundred seventy-eight thousand, sixty-one".