1669047227 has 4 divisors (see below), whose sum is σ = 1669154040. Its totient is φ = 1668940416.

The previous prime is 1669047217. The next prime is 1669047241. The reversal of 1669047227 is 7227409661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7227409661 = 11317 ⋅638633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1669047227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1669047217) 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, 24893 + ... + 62910.

It is an arithmetic number, because the mean of its divisors is an integer number (417288510).

Almost surely, 2^1669047227 is an apocalyptic number.

1669047227 is a deficient number, since it is larger than the sum of its proper divisors (106813).

1669047227 is an equidigital number, since it uses as much as digits as its factorization.

1669047227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106812.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 1669047227 is about 40853.9744333400. The cubic root of 1669047227 is about 1186.1953262217.

The spelling of 1669047227 in words is "one billion, six hundred sixty-nine million, forty-seven thousand, two hundred twenty-seven".