73444813 has 8 divisors (see below), whose sum is σ = 79241400. Its totient is φ = 67669248.

The previous prime is 73444781. The next prime is 73444841. The reversal of 73444813 is 31844437.

It can be written as a sum of positive squares in 4 ways, for example, as 1483524 + 71961289 = 1218^2 + 8483^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73444813 - 2⁵ = 73444781 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 (73444843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2433 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (9905175).

Almost surely, 2^73444813 is an apocalyptic number.

It is an amenable number.

73444813 is a deficient number, since it is larger than the sum of its proper divisors (5796587).

73444813 is a wasteful number, since it uses less digits than its factorization.

73444813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511.

The product of its digits is 32256, while the sum is 34.

The square root of 73444813 is about 8569.9949241525. The cubic root of 73444813 is about 418.7810708957.

The spelling of 73444813 in words is "seventy-three million, four hundred forty-four thousand, eight hundred thirteen".