73370909 has 4 divisors (see below), whose sum is σ = 73416540. Its totient is φ = 73325280.

The previous prime is 73370887. The next prime is 73370923. The reversal of 73370909 is 90907337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90907337 = 523 ⋅173819.

It can be written as a sum of positive squares in 2 ways, for example, as 50836900 + 22534009 = 7130^2 + 4747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73370909 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 (73370959) 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, 20312 + ... + 23649.

It is an arithmetic number, because the mean of its divisors is an integer number (18354135).

Almost surely, 2^73370909 is an apocalyptic number.

It is an amenable number.

73370909 is a deficient number, since it is larger than the sum of its proper divisors (45631).

73370909 is a wasteful number, since it uses less digits than its factorization.

73370909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45630.

The product of its (nonzero) digits is 35721, while the sum is 38.

The square root of 73370909 is about 8565.6820510687. The cubic root of 73370909 is about 418.6405573053.

The spelling of 73370909 in words is "seventy-three million, three hundred seventy thousand, nine hundred nine".