39669296693 has 4 divisors (see below), whose sum is σ = 42720781068. Its totient is φ = 36617812320.

The previous prime is 39669296687. The next prime is 39669296717.

It is a happy number.

39669296693 is nontrivially palindromic in base 10.

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 6757168804 + 32912127889 = 82202^2 + 181417^2 .

It is a cyclic number.

It is not a de Polignac number, because 39669296693 - 2¹⁶ = 39669231157 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 (39669296633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525742168 + ... + 1525742193.

It is an arithmetic number, because the mean of its divisors is an integer number (10680195267).

Almost surely, 2^39669296693 is an apocalyptic number.

It is an amenable number.

39669296693 is a deficient number, since it is larger than the sum of its proper divisors (3051484375).

39669296693 is a wasteful number, since it uses less digits than its factorization.

39669296693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051484374.

The product of its digits is 153055008, while the sum is 68.

The spelling of 39669296693 in words is "thirty-nine billion, six hundred sixty-nine million, two hundred ninety-six thousand, six hundred ninety-three".