83134987 has 6 divisors (see below), whose sum is σ = 90022092. Its totient is φ = 76739832.

The previous prime is 83134979. The next prime is 83134993. The reversal of 83134987 is 78943138.

It is a happy number.

It is not a de Polignac number, because 83134987 - 2³ = 83134979 is a prime.

It is a super-2 number, since 2×83134987² = 13822852126980338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83144987) 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, 245793 + ... + 246130.

It is an arithmetic number, because the mean of its divisors is an integer number (15003682).

Almost surely, 2^83134987 is an apocalyptic number.

83134987 is a deficient number, since it is larger than the sum of its proper divisors (6887105).

83134987 is a wasteful number, since it uses less digits than its factorization.

83134987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491949 (or 491936 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 83134987 is about 9117.8389435217. The cubic root of 83134987 is about 436.4434140978.

The spelling of 83134987 in words is "eighty-three million, one hundred thirty-four thousand, nine hundred eighty-seven".