289612901 has 4 divisors (see below), whose sum is σ = 306648972. Its totient is φ = 272576832.

The previous prime is 289612837. The next prime is 289612907. The reversal of 289612901 is 109216982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126540001 + 163072900 = 11249^2 + 12770^2 .

It is a cyclic number.

It is not a de Polignac number, because 289612901 - 2⁶ = 289612837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289612907) 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, 8518010 + ... + 8518043.

It is an arithmetic number, because the mean of its divisors is an integer number (76662243).

Almost surely, 2^289612901 is an apocalyptic number.

It is an amenable number.

289612901 is a deficient number, since it is larger than the sum of its proper divisors (17036071).

289612901 is a wasteful number, since it uses less digits than its factorization.

289612901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17036070.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 289612901 is about 17018.0169526299. The cubic root of 289612901 is about 661.6159522520.

The spelling of 289612901 in words is "two hundred eighty-nine million, six hundred twelve thousand, nine hundred one".