39889100805 has 8 divisors (see below), whose sum is σ = 63822561312. Its totient is φ = 21274187088.

The previous prime is 39889100743. The next prime is 39889100837. The reversal of 39889100805 is 50800198893.

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

It is not a de Polignac number, because 39889100805 - 2¹⁴ = 39889084421 is a prime.

It is a super-2 number, since 2×39889100805² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329636679 + ... + 1329636708.

It is an arithmetic number, because the mean of its divisors is an integer number (7977820164).

Almost surely, 2^39889100805 is an apocalyptic number.

It is an amenable number.

39889100805 is a deficient number, since it is larger than the sum of its proper divisors (23933460507).

39889100805 is a wasteful number, since it uses less digits than its factorization.

39889100805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659273395.

The product of its (nonzero) digits is 622080, while the sum is 51.

The spelling of 39889100805 in words is "thirty-nine billion, eight hundred eighty-nine million, one hundred thousand, eight hundred five".