894428649 has 15 divisors (see below), whose sum is σ = 1336524013. Its totient is φ = 596106324.

The previous prime is 894428617. The next prime is 894428651. The reversal of 894428649 is 946824498.

The square root of 894428649 is 29907.

It is a perfect power (a square), and thus also a powerful number.

894428649 is a `hidden beast` number, since 89 + 442 + 86 + 49 = 666.

It is not a de Polignac number, because 894428649 - 2⁵ = 894428617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 894428595 and 894428604.

It is not an unprimeable number, because it can be changed into a prime (894428609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 267502 + ... + 270824.

Almost surely, 2^894428649 is an apocalyptic number.

894428649 is the 29907-th square number.

894428649 is the 14954-th centered octagonal number.

It is an amenable number.

894428649 is a deficient number, since it is larger than the sum of its proper divisors (442095364).

894428649 is an frugal number, since it uses more digits than its factorization.

894428649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6658 (or 3326 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The cubic root of 894428649 is about 963.4930075264.

It can be divided in two parts, 8944286 and 49, that added together give a triangular number (8944335 = T₄₂₂₉).

The spelling of 894428649 in words is "eight hundred ninety-four million, four hundred twenty-eight thousand, six hundred forty-nine".