83472409 has 4 divisors (see below), whose sum is σ = 83502900. Its totient is φ = 83441920.

The previous prime is 83472391. The next prime is 83472413. The reversal of 83472409 is 90427438.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74442384 + 9030025 = 8628^2 + 3005^2 .

It is a cyclic number.

It is not a de Polignac number, because 83472409 - 2⁹ = 83471897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83472439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10684 + ... + 16765.

It is an arithmetic number, because the mean of its divisors is an integer number (20875725).

Almost surely, 2^83472409 is an apocalyptic number.

It is an amenable number.

83472409 is a deficient number, since it is larger than the sum of its proper divisors (30491).

83472409 is a wasteful number, since it uses less digits than its factorization.

83472409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30490.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 83472409 is about 9136.3236041638. The cubic root of 83472409 is about 437.0330848897.

The spelling of 83472409 in words is "eighty-three million, four hundred seventy-two thousand, four hundred nine".