73099889 has 4 divisors (see below), whose sum is σ = 73133556. Its totient is φ = 73066224.

The previous prime is 73099867. The next prime is 73099903. The reversal of 73099889 is 98899037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98899037 = 3359 ⋅29443.

It can be written as a sum of positive squares in 2 ways, for example, as 57259489 + 15840400 = 7567^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 73099889 - 2²⁰ = 72051313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73099889.

It is not an unprimeable number, because it can be changed into a prime (73099849) 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, 13334 + ... + 17999.

It is an arithmetic number, because the mean of its divisors is an integer number (18283389).

Almost surely, 2^73099889 is an apocalyptic number.

It is an amenable number.

73099889 is a deficient number, since it is larger than the sum of its proper divisors (33667).

73099889 is a wasteful number, since it uses less digits than its factorization.

73099889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33666.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 73099889 is about 8549.8473085781. The cubic root of 73099889 is about 418.1244583338.

The spelling of 73099889 in words is "seventy-three million, ninety-nine thousand, eight hundred eighty-nine".