73224479 has 4 divisors (see below), whose sum is σ = 76408176. Its totient is φ = 70040784.

The previous prime is 73224467. The next prime is 73224521. The reversal of 73224479 is 97442237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97442237 = 23 ⋅4236619.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73224479 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 (73224409) 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, 1591814 + ... + 1591859.

It is an arithmetic number, because the mean of its divisors is an integer number (19102044).

Almost surely, 2^73224479 is an apocalyptic number.

73224479 is a deficient number, since it is larger than the sum of its proper divisors (3183697).

73224479 is a wasteful number, since it uses less digits than its factorization.

73224479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183696.

The product of its digits is 84672, while the sum is 38.

The square root of 73224479 is about 8557.1303016841. The cubic root of 73224479 is about 418.3618711804.

The spelling of 73224479 in words is "seventy-three million, two hundred twenty-four thousand, four hundred seventy-nine".