289023613 has 16 divisors (see below), whose sum is σ = 316336320. Its totient is φ = 262953216.

The previous prime is 289023601. The next prime is 289023629. The reversal of 289023613 is 316320982.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 289023613 - 2²¹ = 286926461 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 (289023643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101118 + ... + 103936.

It is an arithmetic number, because the mean of its divisors is an integer number (19771020).

Almost surely, 2^289023613 is an apocalyptic number.

It is an amenable number.

289023613 is a deficient number, since it is larger than the sum of its proper divisors (27312707).

289023613 is a wasteful number, since it uses less digits than its factorization.

289023613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 289023613 is about 17000.6944858144. The cubic root of 289023613 is about 661.1669079402.

It can be divided in two parts, 28902 and 3613, that multiplied together give a triangular number (104422926 = T₁₄₄₅₁).

The spelling of 289023613 in words is "two hundred eighty-nine million, twenty-three thousand, six hundred thirteen".