894427439 has 2 divisors, whose sum is σ = 894427440. Its totient is φ = 894427438.

The previous prime is 894427393. The next prime is 894427441. The reversal of 894427439 is 934724498.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-894427439 is a prime.

Together with 894427441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894427459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447213719 + 447213720.

It is an arithmetic number, because the mean of its divisors is an integer number (447213720).

Almost surely, 2^894427439 is an apocalyptic number.

894427439 is a deficient number, since it is larger than the sum of its proper divisors (1).

894427439 is an equidigital number, since it uses as much as digits as its factorization.

894427439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 894427439 is about 29906.9797706154. The cubic root of 894427439 is about 963.4925730490.

The spelling of 894427439 in words is "eight hundred ninety-four million, four hundred twenty-seven thousand, four hundred thirty-nine".