83243399 has 4 divisors (see below), whose sum is σ = 85179336. Its totient is φ = 81307464.

The previous prime is 83243383. The next prime is 83243411. The reversal of 83243399 is 99334238.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99334238 = 2 ⋅49667119.

It is a cyclic number.

It is not a de Polignac number, because 83243399 - 2⁴ = 83243383 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 (83243099) 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, 967904 + ... + 967989.

It is an arithmetic number, because the mean of its divisors is an integer number (21294834).

Almost surely, 2^83243399 is an apocalyptic number.

83243399 is a deficient number, since it is larger than the sum of its proper divisors (1935937).

83243399 is a wasteful number, since it uses less digits than its factorization.

83243399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935936.

The product of its digits is 139968, while the sum is 41.

The square root of 83243399 is about 9123.7820557048. The cubic root of 83243399 is about 436.6330460554.

The spelling of 83243399 in words is "eighty-three million, two hundred forty-three thousand, three hundred ninety-nine".