83390500 has 24 divisors (see below), whose sum is σ = 182125944. Its totient is φ = 33356000.

The previous prime is 83390473. The next prime is 83390509. The reversal of 83390500 is 509338.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14699556 + 68690944 = 3834^2 + 8288^2 .

It is not an unprimeable number, because it can be changed into a prime (83390509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82891 + ... + 83890.

It is an arithmetic number, because the mean of its divisors is an integer number (7588581).

Almost surely, 2^83390500 is an apocalyptic number.

It is an amenable number.

83390500 is an abundant number, since it is smaller than the sum of its proper divisors (98735444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83390500 is a wasteful number, since it uses less digits than its factorization.

83390500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166800 (or 166788 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 83390500 is about 9131.8399022322. The cubic root of 83390500 is about 436.8900889042.

Adding to 83390500 its reverse (509338), we get a palindrome (83899838).

The spelling of 83390500 in words is "eighty-three million, three hundred ninety thousand, five hundred".