916229 has 4 divisors (see below), whose sum is σ = 920460. Its totient is φ = 912000.

The previous prime is 916219. The next prime is 916259. The reversal of 916229 is 922619.

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 429025 + 487204 = 655^2 + 698^2 .

It is a cyclic number.

It is not a de Polignac number, because 916229 - 2⁴ = 916213 is a prime.

It is an Ulam number.

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 (916219) 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, 1772 + ... + 2229.

It is an arithmetic number, because the mean of its divisors is an integer number (230115).

2⁹¹⁶²²⁹ is an apocalyptic number.

It is an amenable number.

916229 is a deficient number, since it is larger than the sum of its proper divisors (4231).

916229 is a wasteful number, since it uses less digits than its factorization.

916229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230.

The product of its digits is 1944, while the sum is 29.

The square root of 916229 is about 957.1985165053. The cubic root of 916229 is about 97.1258154114.

It can be divided in two parts, 916 and 229, that multiplied together give a square (209764 = 458²).

The spelling of 916229 in words is "nine hundred sixteen thousand, two hundred twenty-nine".