894834421 has 4 divisors (see below), whose sum is σ = 963667852. Its totient is φ = 826000992.

The previous prime is 894834377. The next prime is 894834433. The reversal of 894834421 is 124438498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124438498 = 2 ⋅62219249.

It can be written as a sum of positive squares in 2 ways, for example, as 609596100 + 285238321 = 24690^2 + 16889^2 .

It is a cyclic number.

It is not a de Polignac number, because 894834421 - 2⁷ = 894834293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894834461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34416696 + ... + 34416721.

It is an arithmetic number, because the mean of its divisors is an integer number (240916963).

Almost surely, 2^894834421 is an apocalyptic number.

It is an amenable number.

894834421 is a deficient number, since it is larger than the sum of its proper divisors (68833431).

894834421 is a wasteful number, since it uses less digits than its factorization.

894834421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68833430.

The product of its digits is 221184, while the sum is 43.

The square root of 894834421 is about 29913.7831275150. The cubic root of 894834421 is about 963.6386868858.

The spelling of 894834421 in words is "eight hundred ninety-four million, eight hundred thirty-four thousand, four hundred twenty-one".