73438993 has 8 divisors (see below), whose sum is σ = 74226240. Its totient is φ = 72655440.

The previous prime is 73438961. The next prime is 73438999. The reversal of 73438993 is 39983437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73438993 - 2⁵ = 73438961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73438999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56871 + ... + 58147.

It is an arithmetic number, because the mean of its divisors is an integer number (9278280).

Almost surely, 2^73438993 is an apocalyptic number.

It is an amenable number.

73438993 is a deficient number, since it is larger than the sum of its proper divisors (787247).

73438993 is a wasteful number, since it uses less digits than its factorization.

73438993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847.

The product of its digits is 489888, while the sum is 46.

The square root of 73438993 is about 8569.6553606315. The cubic root of 73438993 is about 418.7700087566.

The spelling of 73438993 in words is "seventy-three million, four hundred thirty-eight thousand, nine hundred ninety-three".