83809508 has 6 divisors (see below), whose sum is σ = 146666646. Its totient is φ = 41904752.

The previous prime is 83809487. The next prime is 83809511. The reversal of 83809508 is 80590838.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 5345344 = 8858^2 + 2312^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10476185 + ... + 10476192.

It is an arithmetic number, because the mean of its divisors is an integer number (24444441).

Almost surely, 2^83809508 is an apocalyptic number.

It is an amenable number.

83809508 is a deficient number, since it is larger than the sum of its proper divisors (62857138).

83809508 is a wasteful number, since it uses less digits than its factorization.

83809508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20952381 (or 20952379 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 83809508 is about 9154.7533008815. The cubic root of 83809508 is about 437.6206065314.

The spelling of 83809508 in words is "eighty-three million, eight hundred nine thousand, five hundred eight".