39984074065 has 16 divisors (see below), whose sum is σ = 51677707536. Its totient is φ = 29523283200.

The previous prime is 39984074047. The next prime is 39984074099. The reversal of 39984074065 is 56047048993.

39984074065 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 8 ways, for example, as 150700176 + 39833373889 = 12276^2 + 199583^2 .

It is not a de Polignac number, because 39984074065 - 2¹⁷ = 39983942993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39984073997 and 39984074015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623395 + ... + 684535.

It is an arithmetic number, because the mean of its divisors is an integer number (3229856721).

Almost surely, 2^39984074065 is an apocalyptic number.

It is an amenable number.

39984074065 is a deficient number, since it is larger than the sum of its proper divisors (11693633471).

39984074065 is a wasteful number, since it uses less digits than its factorization.

39984074065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71220.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 39984074065 in words is "thirty-nine billion, nine hundred eighty-four million, seventy-four thousand, sixty-five".