365989 has 8 divisors (see below), whose sum is σ = 403200. Its totient is φ = 330096.

The previous prime is 365983. The next prime is 366001. The reversal of 365989 is 989563.

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

It is not a de Polignac number, because 365989 - 2¹¹ = 363941 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365983) 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, 312 + ... + 910.

It is an arithmetic number, because the mean of its divisors is an integer number (50400).

2³⁶⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

365989 is a deficient number, since it is larger than the sum of its proper divisors (37211).

365989 is a wasteful number, since it uses less digits than its factorization.

365989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its digits is 58320, while the sum is 40.

The square root of 365989 is about 604.9702472023. The cubic root of 365989 is about 71.5301843313.

The spelling of 365989 in words is "three hundred sixty-five thousand, nine hundred eighty-nine".