289944131 has 4 divisors (see below), whose sum is σ = 292030200. Its totient is φ = 287858064.

The previous prime is 289944121. The next prime is 289944133. The reversal of 289944131 is 131449982.

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

It is a cyclic number.

It is not a de Polignac number, because 289944131 - 2¹⁰ = 289943107 is a prime.

It is a super-2 number, since 2×289944131² = 168135198202690322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289944133) 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, 1042826 + ... + 1043103.

It is an arithmetic number, because the mean of its divisors is an integer number (73007550).

Almost surely, 2^289944131 is an apocalyptic number.

289944131 is a deficient number, since it is larger than the sum of its proper divisors (2086069).

289944131 is a wasteful number, since it uses less digits than its factorization.

289944131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086068.

The product of its digits is 62208, while the sum is 41.

The square root of 289944131 is about 17027.7459165915. The cubic root of 289944131 is about 661.8680860003.

The spelling of 289944131 in words is "two hundred eighty-nine million, nine hundred forty-four thousand, one hundred thirty-one".