83993380 has 12 divisors (see below), whose sum is σ = 176386140. Its totient is φ = 33597344.

The previous prime is 83993369. The next prime is 83993387. The reversal of 83993380 is 8339938.

It can be written as a sum of positive squares in 2 ways, for example, as 59629284 + 24364096 = 7722^2 + 4936^2 .

It is not an unprimeable number, because it can be changed into a prime (83993387) 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, 2099815 + ... + 2099854.

It is an arithmetic number, because the mean of its divisors is an integer number (14698845).

Almost surely, 2^83993380 is an apocalyptic number.

It is an amenable number.

83993380 is an abundant number, since it is smaller than the sum of its proper divisors (92392760).

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

83993380 is a wasteful number, since it uses less digits than its factorization.

83993380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199678 (or 4199676 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 83993380 is about 9164.7902321875. The cubic root of 83993380 is about 437.9404087593.

The spelling of 83993380 in words is "eighty-three million, nine hundred ninety-three thousand, three hundred eighty".