73338991 has 4 divisors (see below), whose sum is σ = 80006184. Its totient is φ = 66671800.

The previous prime is 73338989. The next prime is 73338997. The reversal of 73338991 is 19983337.

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

It is a cyclic number.

It is not a de Polignac number, because 73338991 - 2¹ = 73338989 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 (73338997) 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, 3333580 + ... + 3333601.

It is an arithmetic number, because the mean of its divisors is an integer number (20001546).

Almost surely, 2^73338991 is an apocalyptic number.

73338991 is a deficient number, since it is larger than the sum of its proper divisors (6667193).

73338991 is a wasteful number, since it uses less digits than its factorization.

73338991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667192.

The product of its digits is 122472, while the sum is 43.

The square root of 73338991 is about 8563.8187159701. The cubic root of 73338991 is about 418.5798424726.

The spelling of 73338991 in words is "seventy-three million, three hundred thirty-eight thousand, nine hundred ninety-one".