83894321 has 6 divisors (see below), whose sum is σ = 97591410. Its totient is φ = 71909376.

The previous prime is 83894299. The next prime is 83894341. The reversal of 83894321 is 12349838.

It can be written as a sum of positive squares in only one way, i.e., 72931600 + 10962721 = 8540^2 + 3311^2 .

It is not a de Polignac number, because 83894321 - 2¹⁰ = 83893297 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (83894341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 856016 + ... + 856113.

It is an arithmetic number, because the mean of its divisors is an integer number (16265235).

Almost surely, 2^83894321 is an apocalyptic number.

It is an amenable number.

83894321 is a deficient number, since it is larger than the sum of its proper divisors (13697089).

83894321 is a wasteful number, since it uses less digits than its factorization.

83894321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712143 (or 1712136 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 83894321 is about 9159.3843133695. The cubic root of 83894321 is about 437.7681769138.

It can be divided in two parts, 838 and 94321, that added together give a palindrome (95159).

The spelling of 83894321 in words is "eighty-three million, eight hundred ninety-four thousand, three hundred twenty-one".