83509249 has 4 divisors (see below), whose sum is σ = 84924720. Its totient is φ = 82093780.

The previous prime is 83509247. The next prime is 83509289. The reversal of 83509249 is 94290538.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 83509249 - 2¹ = 83509247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83509243) 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, 707647 + ... + 707764.

It is an arithmetic number, because the mean of its divisors is an integer number (21231180).

It is a Proth number, since it is equal to 5097 ⋅ 2¹⁴ + 1 and 5097 < 2¹⁴.

Almost surely, 2^83509249 is an apocalyptic number.

It is an amenable number.

83509249 is a deficient number, since it is larger than the sum of its proper divisors (1415471).

83509249 is a wasteful number, since it uses less digits than its factorization.

83509249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415470.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 83509249 is about 9138.3395099985. The cubic root of 83509249 is about 437.0973693283.

The spelling of 83509249 in words is "eighty-three million, five hundred nine thousand, two hundred forty-nine".