365889 has 4 divisors (see below), whose sum is σ = 487856. Its totient is φ = 243924.

The previous prime is 365851. The next prime is 365903. The reversal of 365889 is 988563.

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 365889 - 2⁹ = 365377 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6⁷ + 8⁵ + 5 + 8⁵ + 9³ .

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 365889.

It is not an unprimeable number, because it can be changed into a prime (365809) 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, 60979 + ... + 60984.

It is an arithmetic number, because the mean of its divisors is an integer number (121964).

2³⁶⁵⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

365889 is a deficient number, since it is larger than the sum of its proper divisors (121967).

365889 is a wasteful number, since it uses less digits than its factorization.

365889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121966.

The product of its digits is 51840, while the sum is 39.

The square root of 365889 is about 604.8875928633. The cubic root of 365889 is about 71.5236689533.

The spelling of 365889 in words is "three hundred sixty-five thousand, eight hundred eighty-nine".