83243009 has 8 divisors (see below), whose sum is σ = 87732480. Its totient is φ = 78764400.

The previous prime is 83242949. The next prime is 83243051. The reversal of 83243009 is 90034238.

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 83243009 - 2¹² = 83238913 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 16619 + ... + 21039.

It is an arithmetic number, because the mean of its divisors is an integer number (10966560).

Almost surely, 2^83243009 is an apocalyptic number.

It is an amenable number.

83243009 is a deficient number, since it is larger than the sum of its proper divisors (4489471).

83243009 is a wasteful number, since it uses less digits than its factorization.

83243009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 83243009 is about 9123.7606829640. The cubic root of 83243009 is about 436.6323641709.

The spelling of 83243009 in words is "eighty-three million, two hundred forty-three thousand, nine".