104390569 has 2 divisors, whose sum is σ = 104390570. Its totient is φ = 104390568.

The previous prime is 104390513. The next prime is 104390597. The reversal of 104390569 is 965093401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104284944 + 105625 = 10212^2 + 325^2 .

It is an emirp because it is prime and its reverse (965093401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104390569 - 2¹⁵ = 104357801 is a prime.

It is a super-2 number, since 2×104390569² = 21794781792287522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (104390509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52195284 + 52195285.

It is an arithmetic number, because the mean of its divisors is an integer number (52195285).

Almost surely, 2^104390569 is an apocalyptic number.

It is an amenable number.

104390569 is a deficient number, since it is larger than the sum of its proper divisors (1).

104390569 is an equidigital number, since it uses as much as digits as its factorization.

104390569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 104390569 is about 10217.1703029753. The cubic root of 104390569 is about 470.8548934463.

The spelling of 104390569 in words is "one hundred four million, three hundred ninety thousand, five hundred sixty-nine".