83868887 has 2 divisors, whose sum is σ = 83868888. Its totient is φ = 83868886.

The previous prime is 83868823. The next prime is 83868931. The reversal of 83868887 is 78886838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83868887 - 2⁶ = 83868823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83868817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41934443 + 41934444.

It is an arithmetic number, because the mean of its divisors is an integer number (41934444).

Almost surely, 2^83868887 is an apocalyptic number.

83868887 is a deficient number, since it is larger than the sum of its proper divisors (1).

83868887 is an equidigital number, since it uses as much as digits as its factorization.

83868887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4128768, while the sum is 56.

The square root of 83868887 is about 9157.9957960244. The cubic root of 83868887 is about 437.7239334694.

The spelling of 83868887 in words is "eighty-three million, eight hundred sixty-eight thousand, eight hundred eighty-seven".