38996789321 has 4 divisors (see below), whose sum is σ = 44567759232. Its totient is φ = 33425819412.

The previous prime is 38996789269. The next prime is 38996789327. The reversal of 38996789321 is 12398769983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12398769983 = 521 ⋅23798023.

It is a cyclic number.

It is not a de Polignac number, because 38996789321 - 2¹⁸ = 38996527177 is a prime.

It is a super-3 number, since 3×38996789321³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38996789327) 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, 2785484945 + ... + 2785484958.

It is an arithmetic number, because the mean of its divisors is an integer number (11141939808).

Almost surely, 2^38996789321 is an apocalyptic number.

It is an amenable number.

38996789321 is a deficient number, since it is larger than the sum of its proper divisors (5570969911).

38996789321 is an equidigital number, since it uses as much as digits as its factorization.

38996789321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570969910.

The product of its digits is 35271936, while the sum is 65.

The spelling of 38996789321 in words is "thirty-eight billion, nine hundred ninety-six million, seven hundred eighty-nine thousand, three hundred twenty-one".