1966229 has 4 divisors (see below), whose sum is σ = 2034060. Its totient is φ = 1898400.

The previous prime is 1966219. The next prime is 1966241. The reversal of 1966229 is 9226691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9226691 = 389 ⋅23719.

It can be written as a sum of positive squares in 2 ways, for example, as 996004 + 970225 = 998^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966229 - 2⁸ = 1965973 is a prime.

It is a d-powerful number, because it can be written as 1 + 9² + 6⁷ + 6⁸ + 2 + 2⁵ + 9⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966219) 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, 33872 + ... + 33929.

It is an arithmetic number, because the mean of its divisors is an integer number (508515).

2^1966229 is an apocalyptic number.

It is an amenable number.

1966229 is a deficient number, since it is larger than the sum of its proper divisors (67831).

1966229 is an equidigital number, since it uses as much as digits as its factorization.

1966229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67830.

The product of its digits is 11664, while the sum is 35.

The square root of 1966229 is about 1402.2228781474. Note that the first 3 decimals coincide. The cubic root of 1966229 is about 125.2789291254.

It can be divided in two parts, 19662 and 29, that added together give a palindrome (19691).

The spelling of 1966229 in words is "one million, nine hundred sixty-six thousand, two hundred twenty-nine".