367921 has 4 divisors (see below), whose sum is σ = 371812. Its totient is φ = 364032.

The previous prime is 367909. The next prime is 367949. The reversal of 367921 is 129763.

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

It can be written as a sum of positive squares in 2 ways, for example, as 112896 + 255025 = 336^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 367921 - 2⁵ = 367889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 367921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (367021) 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, 1800 + ... + 1993.

It is an arithmetic number, because the mean of its divisors is an integer number (92953).

367921 is a Friedman number, since it can be written as (9^7+6-2)/13, using all its digits and the basic arithmetic operations.

2³⁶⁷⁹²¹ is an apocalyptic number.

It is an amenable number.

367921 is a deficient number, since it is larger than the sum of its proper divisors (3891).

367921 is an equidigital number, since it uses as much as digits as its factorization.

367921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890.

The product of its digits is 2268, while the sum is 28.

The square root of 367921 is about 606.5649182074. The cubic root of 367921 is about 71.6558291406.

It can be divided in two parts, 36 and 7921, that multiplied together give a square (285156 = 534²).

The spelling of 367921 in words is "three hundred sixty-seven thousand, nine hundred twenty-one".