73822309 has 4 divisors (see below), whose sum is σ = 80533440. Its totient is φ = 67111180.

The previous prime is 73822291. The next prime is 73822339. The reversal of 73822309 is 90322837.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90322837 = 11 ⋅8211167.

It is a cyclic number.

It is not a de Polignac number, because 73822309 - 2¹¹ = 73820261 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 (73822339) 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, 3355549 + ... + 3355570.

It is an arithmetic number, because the mean of its divisors is an integer number (20133360).

Almost surely, 2^73822309 is an apocalyptic number.

It is an amenable number.

73822309 is a deficient number, since it is larger than the sum of its proper divisors (6711131).

73822309 is a wasteful number, since it uses less digits than its factorization.

73822309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711130.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 73822309 is about 8591.9909799766. The cubic root of 73822309 is about 419.4973370422.

The spelling of 73822309 in words is "seventy-three million, eight hundred twenty-two thousand, three hundred nine".