73899569 has 16 divisors (see below), whose sum is σ = 81648000. Its totient is φ = 66608640.

The previous prime is 73899559. The next prime is 73899577. The reversal of 73899569 is 96599837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73899569 is a prime.

It is a super-2 number, since 2×73899569² = 10922292596771522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73899559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38177 + ... + 40065.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^73899569 is an apocalyptic number.

It is an amenable number.

73899569 is a deficient number, since it is larger than the sum of its proper divisors (7748431).

73899569 is a wasteful number, since it uses less digits than its factorization.

73899569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008.

The product of its digits is 3674160, while the sum is 56.

The square root of 73899569 is about 8596.4858517885. The cubic root of 73899569 is about 419.6436300564.

The spelling of 73899569 in words is "seventy-three million, eight hundred ninety-nine thousand, five hundred sixty-nine".