83993444 has 12 divisors (see below), whose sum is σ = 147231084. Its totient is φ = 41927424.

The previous prime is 83993417. The next prime is 83993449. The reversal of 83993444 is 44439938.

It can be written as a sum of positive squares in 2 ways, for example, as 25623844 + 58369600 = 5062^2 + 7640^2 .

It is a super-2 number, since 2×83993444² = 14109797269962272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83993395 and 83993404.

It is not an unprimeable number, because it can be changed into a prime (83993449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14549 + ... + 19484.

It is an arithmetic number, because the mean of its divisors is an integer number (12269257).

Almost surely, 2^83993444 is an apocalyptic number.

It is an amenable number.

83993444 is a deficient number, since it is larger than the sum of its proper divisors (63237640).

83993444 is a wasteful number, since it uses less digits than its factorization.

83993444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34654 (or 34652 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 83993444 is about 9164.7937238107. The cubic root of 83993444 is about 437.9405199910.

The spelling of 83993444 in words is "eighty-three million, nine hundred ninety-three thousand, four hundred forty-four".