169942226 has 4 divisors (see below), whose sum is σ = 254913342. Its totient is φ = 84971112.

The previous prime is 169942211. The next prime is 169942229. The reversal of 169942226 is 622249961.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 167055625 + 2886601 = 12925^2 + 1699^2 .

It is not an unprimeable number, because it can be changed into a prime (169942229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42485555 + ... + 42485558.

Almost surely, 2^169942226 is an apocalyptic number.

169942226 is a deficient number, since it is larger than the sum of its proper divisors (84971116).

169942226 is an equidigital number, since it uses as much as digits as its factorization.

169942226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84971115.

The product of its digits is 93312, while the sum is 41.

The square root of 169942226 is about 13036.1890903745. The cubic root of 169942226 is about 553.9030640129.

The spelling of 169942226 in words is "one hundred sixty-nine million, nine hundred forty-two thousand, two hundred twenty-six".