73320399 has 6 divisors (see below), whose sum is σ = 105907256. Its totient is φ = 48880260.

The previous prime is 73320293. The next prime is 73320419. The reversal of 73320399 is 99302337.

It is not a de Polignac number, because 73320399 - 2⁷ = 73320271 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 (73320899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4073347 + ... + 4073364.

Almost surely, 2^73320399 is an apocalyptic number.

73320399 is a deficient number, since it is larger than the sum of its proper divisors (32586857).

73320399 is a wasteful number, since it uses less digits than its factorization.

73320399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146717 (or 8146714 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 36.

The square root of 73320399 is about 8562.7331501104. The cubic root of 73320399 is about 418.5444684102.

The spelling of 73320399 in words is "seventy-three million, three hundred twenty thousand, three hundred ninety-nine".