366849221 has 4 divisors (see below), whose sum is σ = 368145792. Its totient is φ = 365552652.

The previous prime is 366849157. The next prime is 366849227. The reversal of 366849221 is 122948663.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122948663 = 47 ⋅2615929.

It is a cyclic number.

It is not a de Polignac number, because 366849221 - 2⁶ = 366849157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366849227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647861 + ... + 648426.

It is an arithmetic number, because the mean of its divisors is an integer number (92036448).

Almost surely, 2^366849221 is an apocalyptic number.

It is an amenable number.

366849221 is a deficient number, since it is larger than the sum of its proper divisors (1296571).

366849221 is a wasteful number, since it uses less digits than its factorization.

366849221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296570.

The product of its digits is 124416, while the sum is 41.

The square root of 366849221 is about 19153.3083565216. The cubic root of 366849221 is about 715.8618202651.

The spelling of 366849221 in words is "three hundred sixty-six million, eight hundred forty-nine thousand, two hundred twenty-one".