894124789 has 2 divisors, whose sum is σ = 894124790. Its totient is φ = 894124788.

The previous prime is 894124771. The next prime is 894124801. The reversal of 894124789 is 987421498.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797102289 + 97022500 = 28233^2 + 9850^2 .

It is a cyclic number.

It is not a de Polignac number, because 894124789 - 2¹⁵ = 894092021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894124709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447062394 + 447062395.

It is an arithmetic number, because the mean of its divisors is an integer number (447062395).

Almost surely, 2^894124789 is an apocalyptic number.

It is an amenable number.

894124789 is a deficient number, since it is larger than the sum of its proper divisors (1).

894124789 is an equidigital number, since it uses as much as digits as its factorization.

894124789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 52.

The square root of 894124789 is about 29901.9194868824. The cubic root of 894124789 is about 963.3838875329.

The spelling of 894124789 in words is "eight hundred ninety-four million, one hundred twenty-four thousand, seven hundred eighty-nine".