289020729 has 4 divisors (see below), whose sum is σ = 385360976. Its totient is φ = 192680484.

The previous prime is 289020707. The next prime is 289020733. The reversal of 289020729 is 927020982.

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 not a de Polignac number, because 289020729 - 2⁷ = 289020601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289020749) 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, 48170119 + ... + 48170124.

It is an arithmetic number, because the mean of its divisors is an integer number (96340244).

Almost surely, 2^289020729 is an apocalyptic number.

It is an amenable number.

289020729 is a deficient number, since it is larger than the sum of its proper divisors (96340247).

289020729 is an equidigital number, since it uses as much as digits as its factorization.

289020729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96340246.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 289020729 is about 17000.6096655385. The cubic root of 289020729 is about 661.1647087984.

The spelling of 289020729 in words is "two hundred eighty-nine million, twenty thousand, seven hundred twenty-nine".