289733969 has 4 divisors (see below), whose sum is σ = 331124544. Its totient is φ = 248343396.

The previous prime is 289733933. The next prime is 289733981. The reversal of 289733969 is 969337982.

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 289733969 - 2²⁰ = 288685393 is a prime.

It is a super-2 number, since 2×289733969² = 167891545584985922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289733069) 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, 20695277 + ... + 20695290.

It is an arithmetic number, because the mean of its divisors is an integer number (82781136).

Almost surely, 2^289733969 is an apocalyptic number.

It is an amenable number.

289733969 is a deficient number, since it is larger than the sum of its proper divisors (41390575).

289733969 is an equidigital number, since it uses as much as digits as its factorization.

289733969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41390574.

The product of its digits is 4408992, while the sum is 56.

The square root of 289733969 is about 17021.5736346555. The cubic root of 289733969 is about 661.7081320327.

The spelling of 289733969 in words is "two hundred eighty-nine million, seven hundred thirty-three thousand, nine hundred sixty-nine".