73899813 has 12 divisors (see below), whose sum is σ = 106696320. Its totient is φ = 45476496.

The previous prime is 73899811. The next prime is 73899817. The reversal of 73899813 is 31899837.

It is not a de Polignac number, because 73899813 - 2¹ = 73899811 is a prime.

It is a super-2 number, since 2×73899813² = 10922364722869938, which contains 22 as substring.

It is the 8597-th Hogben number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73899811) by changing a digit.

It is a nontrivial repunit in base 8596.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72373 + ... + 73386.

It is an arithmetic number, because the mean of its divisors is an integer number (8891360).

Almost surely, 2^73899813 is an apocalyptic number.

It is an amenable number.

73899813 is a deficient number, since it is larger than the sum of its proper divisors (32796507).

73899813 is a wasteful number, since it uses less digits than its factorization.

73899813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145788 (or 145775 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 73899813 is about 8596.5000436224. The cubic root of 73899813 is about 419.6440919126.

The spelling of 73899813 in words is "seventy-three million, eight hundred ninety-nine thousand, eight hundred thirteen".