73458909 has 24 divisors (see below), whose sum is σ = 108009720. Its totient is φ = 48102912.

The previous prime is 73458893. The next prime is 73458971. The reversal of 73458909 is 90985437.

It can be written as a sum of positive squares in 4 ways, for example, as 1633284 + 71825625 = 1278^2 + 8475^2 .

It is not a de Polignac number, because 73458909 - 2⁴ = 73458893 is a prime.

It is a super-2 number, since 2×73458909² = 10792422622940562, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73458109) 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 23 ways as a sum of consecutive naturals, for example, 234537 + ... + 234849.

It is an arithmetic number, because the mean of its divisors is an integer number (4500405).

Almost surely, 2^73458909 is an apocalyptic number.

It is an amenable number.

73458909 is a deficient number, since it is larger than the sum of its proper divisors (34550811).

73458909 is a wasteful number, since it uses less digits than its factorization.

73458909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 73458909 is about 8570.8172889171. The cubic root of 73458909 is about 418.8078608990.

The spelling of 73458909 in words is "seventy-three million, four hundred fifty-eight thousand, nine hundred nine".