289826961 has 4 divisors (see below), whose sum is σ = 386435952. Its totient is φ = 193217972.

The previous prime is 289826959. The next prime is 289826963. The reversal of 289826961 is 169628982.

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 an interprime number because it is at equal distance from previous prime (289826959) and next prime (289826963).

It is a cyclic number.

It is not a de Polignac number, because 289826961 - 2¹ = 289826959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289826963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48304491 + ... + 48304496.

It is an arithmetic number, because the mean of its divisors is an integer number (96608988).

Almost surely, 2^289826961 is an apocalyptic number.

It is an amenable number.

289826961 is a deficient number, since it is larger than the sum of its proper divisors (96608991).

289826961 is an equidigital number, since it uses as much as digits as its factorization.

289826961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96608990.

The product of its digits is 746496, while the sum is 51.

The square root of 289826961 is about 17024.3050078410. The cubic root of 289826961 is about 661.7789176351.

The spelling of 289826961 in words is "two hundred eighty-nine million, eight hundred twenty-six thousand, nine hundred sixty-one".