83861895 has 16 divisors (see below), whose sum is σ = 144500832. Its totient is φ = 41285760.

The previous prime is 83861891. The next prime is 83862001. The reversal of 83861895 is 59816838.

It is not a de Polignac number, because 83861895 - 2² = 83861891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83861891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214836 + ... + 215225.

It is an arithmetic number, because the mean of its divisors is an integer number (9031302).

Almost surely, 2^83861895 is an apocalyptic number.

83861895 is a deficient number, since it is larger than the sum of its proper divisors (60638937).

83861895 is a wasteful number, since it uses less digits than its factorization.

83861895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430082.

The product of its digits is 414720, while the sum is 48.

The square root of 83861895 is about 9157.6140451539. The cubic root of 83861895 is about 437.7117690427.

The spelling of 83861895 in words is "eighty-three million, eight hundred sixty-one thousand, eight hundred ninety-five".