73864393 has 8 divisors (see below), whose sum is σ = 75724200. Its totient is φ = 72027648.

The previous prime is 73864391. The next prime is 73864397. The reversal of 73864393 is 39346837.

It can be written as a sum of positive squares in 4 ways, for example, as 6411024 + 67453369 = 2532^2 + 8213^2 .

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 73864393 - 2¹ = 73864391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73864391) 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, 813 + ... + 12181.

It is an arithmetic number, because the mean of its divisors is an integer number (9465525).

Almost surely, 2^73864393 is an apocalyptic number.

73864393 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

73864393 is a deficient number, since it is larger than the sum of its proper divisors (1859807).

73864393 is a wasteful number, since it uses less digits than its factorization.

73864393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11531.

The product of its digits is 326592, while the sum is 43.

The square root of 73864393 is about 8594.4396559636. The cubic root of 73864393 is about 419.5770364020.

The spelling of 73864393 in words is "seventy-three million, eight hundred sixty-four thousand, three hundred ninety-three".