83855539 has 4 divisors (see below), whose sum is σ = 87501456. Its totient is φ = 80209624.

The previous prime is 83855507. The next prime is 83855549. The reversal of 83855539 is 93555838.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83855539 - 2⁵ = 83855507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83855549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1822924 + ... + 1822969.

It is an arithmetic number, because the mean of its divisors is an integer number (21875364).

Almost surely, 2^83855539 is an apocalyptic number.

83855539 is a deficient number, since it is larger than the sum of its proper divisors (3645917).

83855539 is a wasteful number, since it uses less digits than its factorization.

83855539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645916.

The product of its digits is 648000, while the sum is 46.

The square root of 83855539 is about 9157.2670049530. The cubic root of 83855539 is about 437.7007105188.

It can be divided in two parts, 8385 and 5539, that added together give a square (13924 = 118²).

The spelling of 83855539 in words is "eighty-three million, eight hundred fifty-five thousand, five hundred thirty-nine".