804242869 has 2 divisors, whose sum is σ = 804242870. Its totient is φ = 804242868.

The previous prime is 804242861. The next prime is 804242899. The reversal of 804242869 is 968242408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 642622500 + 161620369 = 25350^2 + 12713^2 .

It is a cyclic number.

It is not a de Polignac number, because 804242869 - 2³ = 804242861 is a prime.

It is a super-2 number, since 2×804242869² = 1293613184674702322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804242861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402121434 + 402121435.

It is an arithmetic number, because the mean of its divisors is an integer number (402121435).

Almost surely, 2^804242869 is an apocalyptic number.

It is an amenable number.

804242869 is a deficient number, since it is larger than the sum of its proper divisors (1).

804242869 is an equidigital number, since it uses as much as digits as its factorization.

804242869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 804242869 is about 28359.1760987515. The cubic root of 804242869 is about 929.9560117168.

The spelling of 804242869 in words is "eight hundred four million, two hundred forty-two thousand, eight hundred sixty-nine".