301989 has 8 divisors (see below), whose sum is σ = 412192. Its totient is φ = 196560.

The previous prime is 301979. The next prime is 301991. The reversal of 301989 is 989103.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 301989 - 2¹¹ = 299941 is a prime.

It is a super-2 number, since 2×301989² = 182394712242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042 + ... + 1299.

It is an arithmetic number, because the mean of its divisors is an integer number (51524).

2³⁰¹⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

301989 is a deficient number, since it is larger than the sum of its proper divisors (110203).

301989 is a wasteful number, since it uses less digits than its factorization.

301989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 301989 is about 549.5352581955. The cubic root of 301989 is about 67.0909139314.

The spelling of 301989 in words is "three hundred one thousand, nine hundred eighty-nine".