289102045 has 4 divisors (see below), whose sum is σ = 346922460. Its totient is φ = 231281632.

The previous prime is 289102027. The next prime is 289102049. The reversal of 289102045 is 540201982.

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 103978809 + 185123236 = 10197^2 + 13606^2 .

It is a cyclic number.

It is not a de Polignac number, because 289102045 - 2¹¹ = 289099997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289101998 and 289102016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289102049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28910200 + ... + 28910209.

It is an arithmetic number, because the mean of its divisors is an integer number (86730615).

Almost surely, 2^289102045 is an apocalyptic number.

It is an amenable number.

289102045 is a deficient number, since it is larger than the sum of its proper divisors (57820415).

289102045 is an equidigital number, since it uses as much as digits as its factorization.

289102045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57820414.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 289102045 is about 17003.0010586367. The cubic root of 289102045 is about 661.2267092281.

The spelling of 289102045 in words is "two hundred eighty-nine million, one hundred two thousand, forty-five".