69804409 has 2 divisors, whose sum is σ = 69804410. Its totient is φ = 69804408.

The previous prime is 69804373. The next prime is 69804443. The reversal of 69804409 is 90440896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 19607184 = 7085^2 + 4428^2 .

It is a cyclic number.

It is not a de Polignac number, because 69804409 - 2⁹ = 69803897 is a prime.

It is not a weakly prime, because it can be changed into another prime (69804109) 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, 34902204 + 34902205.

It is an arithmetic number, because the mean of its divisors is an integer number (34902205).

Almost surely, 2^69804409 is an apocalyptic number.

It is an amenable number.

69804409 is a deficient number, since it is larger than the sum of its proper divisors (1).

69804409 is an equidigital number, since it uses as much as digits as its factorization.

69804409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 69804409 is about 8354.9032908825. The cubic root of 69804409 is about 411.7443212866.

The spelling of 69804409 in words is "sixty-nine million, eight hundred four thousand, four hundred nine".