83489887 has 6 divisors (see below), whose sum is σ = 90406392. Its totient is φ = 77067432.

The previous prime is 83489849. The next prime is 83489891. The reversal of 83489887 is 78898438.

It is not a de Polignac number, because 83489887 - 2⁷ = 83489759 is a prime.

It is a super-2 number, since 2×83489887² = 13941122462545538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83489827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 246843 + ... + 247180.

It is an arithmetic number, because the mean of its divisors is an integer number (15067732).

Almost surely, 2^83489887 is an apocalyptic number.

83489887 is a deficient number, since it is larger than the sum of its proper divisors (6916505).

83489887 is a wasteful number, since it uses less digits than its factorization.

83489887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494049 (or 494036 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 55.

The square root of 83489887 is about 9137.2800657526. The cubic root of 83489887 is about 437.0635857114.

The spelling of 83489887 in words is "eighty-three million, four hundred eighty-nine thousand, eight hundred eighty-seven".