73538399 has 8 divisors (see below), whose sum is σ = 80510592. Its totient is φ = 66614040.

The previous prime is 73538389. The next prime is 73538407. The reversal of 73538399 is 99383537.

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 73538399 - 2¹² = 73534303 is a prime.

It is a super-2 number, since 2×73538399² = 10815792254966402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73538389) 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, 8699 + ... + 14924.

It is an arithmetic number, because the mean of its divisors is an integer number (10063824).

Almost surely, 2^73538399 is an apocalyptic number.

73538399 is a deficient number, since it is larger than the sum of its proper divisors (6972193).

73538399 is a wasteful number, since it uses less digits than its factorization.

73538399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23917.

The product of its digits is 612360, while the sum is 47.

The square root of 73538399 is about 8575.4532824802. The cubic root of 73538399 is about 418.9588706560.

It can be divided in two parts, 73538 and 399, that added together give a palindrome (73937).

The spelling of 73538399 in words is "seventy-three million, five hundred thirty-eight thousand, three hundred ninety-nine".