1904069 has 2 divisors, whose sum is σ = 1904070. Its totient is φ = 1904068.

The previous prime is 1904041. The next prime is 1904087. The reversal of 1904069 is 9604091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181569 + 722500 = 1087^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1904069 is a prime.

It is a super-2 number, since 2×1904069² = 7250957513522, which contains 22 as substring.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1904029) 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, 952034 + 952035.

It is an arithmetic number, because the mean of its divisors is an integer number (952035).

2^1904069 is an apocalyptic number.

It is an amenable number.

1904069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1904069 is an equidigital number, since it uses as much as digits as its factorization.

1904069 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1904069 is about 1379.8800672522. The cubic root of 1904069 is about 123.9445858884.

The spelling of 1904069 in words is "one million, nine hundred four thousand, sixty-nine".