894660869 has 2 divisors, whose sum is σ = 894660870. Its totient is φ = 894660868.

The previous prime is 894660863. The next prime is 894661013. The reversal of 894660869 is 968066498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546390625 + 348270244 = 23375^2 + 18662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894660869 is a prime.

It is a super-2 number, since 2×894660869² = 1600836141039670322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894660863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447330434 + 447330435.

It is an arithmetic number, because the mean of its divisors is an integer number (447330435).

Almost surely, 2^894660869 is an apocalyptic number.

It is an amenable number.

894660869 is a deficient number, since it is larger than the sum of its proper divisors (1).

894660869 is an equidigital number, since it uses as much as digits as its factorization.

894660869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The square root of 894660869 is about 29910.8821167146. The cubic root of 894660869 is about 963.5763840245.

The spelling of 894660869 in words is "eight hundred ninety-four million, six hundred sixty thousand, eight hundred sixty-nine".