83438849 has 6 divisors (see below), whose sum is σ = 90351126. Its totient is φ = 77020320.

The previous prime is 83438819. The next prime is 83438851. The reversal of 83438849 is 94883438.

It can be written as a sum of positive squares in 3 ways, for example, as 7661824 + 75777025 = 2768^2 + 8705^2 .

It is not a de Polignac number, because 83438849 - 2¹² = 83434753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83438809) 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, 246692 + ... + 247029.

It is an arithmetic number, because the mean of its divisors is an integer number (15058521).

Almost surely, 2^83438849 is an apocalyptic number.

It is an amenable number.

83438849 is a deficient number, since it is larger than the sum of its proper divisors (6912277).

83438849 is a wasteful number, since it uses less digits than its factorization.

83438849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493747 (or 493734 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 83438849 is about 9134.4867945605. The cubic root of 83438849 is about 436.9745074646.

The spelling of 83438849 in words is "eighty-three million, four hundred thirty-eight thousand, eight hundred forty-nine".