83861485 has 4 divisors (see below), whose sum is σ = 100633788. Its totient is φ = 67089184.

The previous prime is 83861443. The next prime is 83861513. The reversal of 83861485 is 58416838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58416838 = 2 ⋅29208419.

It can be written as a sum of positive squares in 2 ways, for example, as 10536516 + 73324969 = 3246^2 + 8563^2 .

It is a cyclic number.

It is not a de Polignac number, because 83861485 - 2¹³ = 83853293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8386144 + ... + 8386153.

It is an arithmetic number, because the mean of its divisors is an integer number (25158447).

Almost surely, 2^83861485 is an apocalyptic number.

It is an amenable number.

83861485 is a deficient number, since it is larger than the sum of its proper divisors (16772303).

83861485 is a wasteful number, since it uses less digits than its factorization.

83861485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16772302.

The product of its digits is 184320, while the sum is 43.

The square root of 83861485 is about 9157.5916593829. The cubic root of 83861485 is about 437.7110557186.

The spelling of 83861485 in words is "eighty-three million, eight hundred sixty-one thousand, four hundred eighty-five".