39869803465 has 8 divisors (see below), whose sum is σ = 47844835848. Its totient is φ = 31895128320.

The previous prime is 39869803459. The next prime is 39869803481. The reversal of 39869803465 is 56430896893.

39869803465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3129731136 + 36740072329 = 55944^2 + 191677^2 .

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

It is not a de Polignac number, because 39869803465 - 2⁹ = 39869802953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394545 + ... + 485185.

It is an arithmetic number, because the mean of its divisors is an integer number (5980604481).

Almost surely, 2^39869803465 is an apocalyptic number.

It is an amenable number.

39869803465 is a deficient number, since it is larger than the sum of its proper divisors (7975032383).

39869803465 is an equidigital number, since it uses as much as digits as its factorization.

39869803465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178619.

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 39869803465 in words is "thirty-nine billion, eight hundred sixty-nine million, eight hundred three thousand, four hundred sixty-five".