83980899 has 6 divisors (see below), whose sum is σ = 121305756. Its totient is φ = 55987260.

The previous prime is 83980877. The next prime is 83980913. The reversal of 83980899 is 99808938.

It is not a de Polignac number, because 83980899 - 2¹² = 83976803 is a prime.

It is a super-3 number, since 3×83980899³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (83980999) 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 5 ways as a sum of consecutive naturals, for example, 4665597 + ... + 4665614.

It is an arithmetic number, because the mean of its divisors is an integer number (20217626).

Almost surely, 2^83980899 is an apocalyptic number.

83980899 is a deficient number, since it is larger than the sum of its proper divisors (37324857).

83980899 is a wasteful number, since it uses less digits than its factorization.

83980899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331217 (or 9331214 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 83980899 is about 9164.1092856862. The cubic root of 83980899 is about 437.9187157600.

The spelling of 83980899 in words is "eighty-three million, nine hundred eighty thousand, eight hundred ninety-nine".