1669049 has 2 divisors, whose sum is σ = 1669050. Its totient is φ = 1669048.

The previous prime is 1669027. The next prime is 1669061. The reversal of 1669049 is 9409661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 822649 = 920^2 + 907^2 .

It is an emirp because it is prime and its reverse (9409661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1669049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1669099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834524 + 834525.

It is an arithmetic number, because the mean of its divisors is an integer number (834525).

2^1669049 is an apocalyptic number.

It is an amenable number.

1669049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669049 is an equidigital number, since it uses as much as digits as its factorization.

1669049 is an evil number, because the sum of its binary digits is even.

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

The square root of 1669049 is about 1291.9167929863. The cubic root of 1669049 is about 118.6195746247.

The spelling of 1669049 in words is "one million, six hundred sixty-nine thousand, forty-nine".