39429944789485 has 4 divisors (see below), whose sum is σ = 47315933747388. Its totient is φ = 31543955831584.

The previous prime is 39429944789471. The next prime is 39429944789509. The reversal of 39429944789485 is 58498744992493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7727966326084 + 31701978463401 = 2779922^2 + 5630451^2 .

It is a cyclic number.

It is not a de Polignac number, because 39429944789485 - 2⁹ = 39429944788973 is a prime.

It is a super-2 number, since 2×39429944789485² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3942994478944 + ... + 3942994478953.

It is an arithmetic number, because the mean of its divisors is an integer number (11828983436847).

Almost surely, 2^{39429944789485} is an apocalyptic number.

It is an amenable number.

39429944789485 is a deficient number, since it is larger than the sum of its proper divisors (7885988957903).

39429944789485 is an equidigital number, since it uses as much as digits as its factorization.

39429944789485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7885988957902.

The product of its digits is 22574039040, while the sum is 85.

The spelling of 39429944789485 in words is "thirty-nine trillion, four hundred twenty-nine billion, nine hundred forty-four million, seven hundred eighty-nine thousand, four hundred eighty-five".