83887973 has 8 divisors (see below), whose sum is σ = 90413400. Its totient is φ = 77372928.

The previous prime is 83887961. The next prime is 83888033. The reversal of 83887973 is 37978838.

It can be written as a sum of positive squares in 4 ways, for example, as 31730689 + 52157284 = 5633^2 + 7222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83887973 - 2¹⁰ = 83886949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83887913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25613 + ... + 28701.

It is an arithmetic number, because the mean of its divisors is an integer number (11301675).

Almost surely, 2^83887973 is an apocalyptic number.

It is an amenable number.

83887973 is a deficient number, since it is larger than the sum of its proper divisors (6525427).

83887973 is a wasteful number, since it uses less digits than its factorization.

83887973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191.

The product of its digits is 2032128, while the sum is 53.

The square root of 83887973 is about 9159.0377769720. The cubic root of 83887973 is about 437.7571351553.

It can be divided in two parts, 8388 and 7973, that added together give a palindrome (16361).

The spelling of 83887973 in words is "eighty-three million, eight hundred eighty-seven thousand, nine hundred seventy-three".