959221 has 4 divisors (see below), whose sum is σ = 961632. Its totient is φ = 956812.

The previous prime is 959219. The next prime is 959227. The reversal of 959221 is 122959.

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: 122959 = 41 ⋅2999.

It is a cyclic number.

It is not a de Polignac number, because 959221 - 2¹ = 959219 is a prime.

It is an Ulam number.

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 959221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (959227) 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, 451 + ... + 1456.

It is an arithmetic number, because the mean of its divisors is an integer number (240408).

2⁹⁵⁹²²¹ is an apocalyptic number.

It is an amenable number.

959221 is a deficient number, since it is larger than the sum of its proper divisors (2411).

959221 is a wasteful number, since it uses less digits than its factorization.

959221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410.

The product of its digits is 1620, while the sum is 28.

The square root of 959221 is about 979.3982846626. The cubic root of 959221 is about 98.6217927080.

It can be divided in two parts, 95 and 9221, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 959221 in words is "nine hundred fifty-nine thousand, two hundred twenty-one".