83823543 has 12 divisors (see below), whose sum is σ = 125253960. Its totient is φ = 53955216.

The previous prime is 83823541. The next prime is 83823559. The reversal of 83823543 is 34532838.

It is not a de Polignac number, because 83823543 - 2¹ = 83823541 is a prime.

It is a super-2 number, since 2×83823543² = 14052772722145698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83823498 and 83823507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83823541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160321 + ... + 160842.

It is an arithmetic number, because the mean of its divisors is an integer number (10437830).

Almost surely, 2^83823543 is an apocalyptic number.

83823543 is a deficient number, since it is larger than the sum of its proper divisors (41430417).

83823543 is a wasteful number, since it uses less digits than its factorization.

83823543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321198 (or 321195 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 83823543 is about 9155.5198104750. The cubic root of 83823543 is about 437.6450336023.

The spelling of 83823543 in words is "eighty-three million, eight hundred twenty-three thousand, five hundred forty-three".