39840569085 has 16 divisors (see below), whose sum is σ = 63815213376. Its totient is φ = 21224869248.

The previous prime is 39840569071. The next prime is 39840569089. The reversal of 39840569085 is 58096504893.

It is not a de Polignac number, because 39840569085 - 2¹² = 39840564989 is a prime.

It is a super-3 number, since 3×39840569085³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39840569089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450584 + ... + 1477793.

It is an arithmetic number, because the mean of its divisors is an integer number (3988450836).

Almost surely, 2^39840569085 is an apocalyptic number.

It is an amenable number.

39840569085 is a deficient number, since it is larger than the sum of its proper divisors (23974644291).

39840569085 is a wasteful number, since it uses less digits than its factorization.

39840569085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929292.

The product of its (nonzero) digits is 9331200, while the sum is 57.

The spelling of 39840569085 in words is "thirty-nine billion, eight hundred forty million, five hundred sixty-nine thousand, eighty-five".