365899 has 4 divisors (see below), whose sum is σ = 367264. Its totient is φ = 364536.

The previous prime is 365851. The next prime is 365903. The reversal of 365899 is 998563.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 365899 - 2¹⁵ = 333131 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

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, 132 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (91816).

2³⁶⁵⁸⁹⁹ is an apocalyptic number.

365899 is a deficient number, since it is larger than the sum of its proper divisors (1365).

365899 is an equidigital number, since it uses as much as digits as its factorization.

365899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364.

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

The square root of 365899 is about 604.8958588055. The cubic root of 365899 is about 71.5243205445.

The spelling of 365899 in words is "three hundred sixty-five thousand, eight hundred ninety-nine".