39649094693 has 16 divisors (see below), whose sum is σ = 42908789616. Its totient is φ = 36419811840.

The previous prime is 39649094687. The next prime is 39649094707.

It is a happy number.

39649094693 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 114532804 + 39534561889 = 10702^2 + 198833^2 .

It is a cyclic number.

It is not a de Polignac number, because 39649094693 - 2²⁰ = 39648046117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39649094623) 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, 2226521 + ... + 2244257.

It is an arithmetic number, because the mean of its divisors is an integer number (2681799351).

Almost surely, 2^39649094693 is an apocalyptic number.

It is an amenable number.

39649094693 is a deficient number, since it is larger than the sum of its proper divisors (3259694923).

39649094693 is a wasteful number, since it uses less digits than its factorization.

39649094693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18584.

The product of its (nonzero) digits is 34012224, while the sum is 62.

The spelling of 39649094693 in words is "thirty-nine billion, six hundred forty-nine million, ninety-four thousand, six hundred ninety-three".