73391117 has 4 divisors (see below), whose sum is σ = 74064540. Its totient is φ = 72717696.

The previous prime is 73391099. The next prime is 73391119. The reversal of 73391117 is 71119337.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58537801 + 14853316 = 7651^2 + 3854^2 .

It is a cyclic number.

It is not a de Polignac number, because 73391117 - 2¹⁸ = 73128973 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 (73391119) 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, 336548 + ... + 336765.

It is an arithmetic number, because the mean of its divisors is an integer number (18516135).

Almost surely, 2^73391117 is an apocalyptic number.

It is an amenable number.

73391117 is a deficient number, since it is larger than the sum of its proper divisors (673423).

73391117 is a wasteful number, since it uses less digits than its factorization.

73391117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673422.

The product of its digits is 3969, while the sum is 32.

The square root of 73391117 is about 8566.8615606884. The cubic root of 73391117 is about 418.6789881218.

The spelling of 73391117 in words is "seventy-three million, three hundred ninety-one thousand, one hundred seventeen".