83994881 has 2 divisors, whose sum is σ = 83994882. Its totient is φ = 83994880.

The previous prime is 83994863. The next prime is 83994887. The reversal of 83994881 is 18849938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 20394256 = 7975^2 + 4516^2 .

It is a cyclic number.

It is not a de Polignac number, because 83994881 - 2¹⁰ = 83993857 is a prime.

It is a super-2 number, since 2×83994881² = 14110280068408322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83994887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41997440 + 41997441.

It is an arithmetic number, because the mean of its divisors is an integer number (41997441).

Almost surely, 2^83994881 is an apocalyptic number.

It is an amenable number.

83994881 is a deficient number, since it is larger than the sum of its proper divisors (1).

83994881 is an equidigital number, since it uses as much as digits as its factorization.

83994881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 50.

The square root of 83994881 is about 9164.8721213119. The cubic root of 83994881 is about 437.9430174753.

The spelling of 83994881 in words is "eighty-three million, nine hundred ninety-four thousand, eight hundred eighty-one".