83448509 has 4 divisors (see below), whose sum is σ = 85389216. Its totient is φ = 81507804.

The previous prime is 83448499. The next prime is 83448517. The reversal of 83448509 is 90584438.

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 a cyclic number.

It is not a de Polignac number, because 83448509 - 2¹⁶ = 83382973 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 (83441509) 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, 970289 + ... + 970374.

It is an arithmetic number, because the mean of its divisors is an integer number (21347304).

Almost surely, 2^83448509 is an apocalyptic number.

It is an amenable number.

83448509 is a deficient number, since it is larger than the sum of its proper divisors (1940707).

83448509 is a wasteful number, since it uses less digits than its factorization.

83448509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940706.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 83448509 is about 9135.0155445954. The cubic root of 83448509 is about 436.9913701567.

The spelling of 83448509 in words is "eighty-three million, four hundred forty-eight thousand, five hundred nine".