894388769 has 2 divisors, whose sum is σ = 894388770. Its totient is φ = 894388768.

The previous prime is 894388763. The next prime is 894388793. The reversal of 894388769 is 967883498.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472497169 + 421891600 = 21737^2 + 20540^2 .

It is a cyclic number.

It is not a de Polignac number, because 894388769 - 2²⁰ = 893340193 is a prime.

It is a super-2 number, since 2×894388769² = 1599862540226670722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (894388763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447194384 + 447194385.

It is an arithmetic number, because the mean of its divisors is an integer number (447194385).

Almost surely, 2^894388769 is an apocalyptic number.

It is an amenable number.

894388769 is a deficient number, since it is larger than the sum of its proper divisors (1).

894388769 is an equidigital number, since it uses as much as digits as its factorization.

894388769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 62.

The square root of 894388769 is about 29906.3332590273. Note that the first 3 decimals coincide. The cubic root of 894388769 is about 963.4786875199.

The spelling of 894388769 in words is "eight hundred ninety-four million, three hundred eighty-eight thousand, seven hundred sixty-nine".