39523728669 has 16 divisors (see below), whose sum is σ = 53114840064. Its totient is φ = 26141454000.

The previous prime is 39523728653. The next prime is 39523728707. The reversal of 39523728669 is 96682732593.

It is not a de Polignac number, because 39523728669 - 2⁴ = 39523728653 is a prime.

It is a super-2 number, since 2×39523728669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39523728649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208444 + ... + 349994.

It is an arithmetic number, because the mean of its divisors is an integer number (3319677504).

Almost surely, 2^39523728669 is an apocalyptic number.

It is an amenable number.

39523728669 is a deficient number, since it is larger than the sum of its proper divisors (13591111395).

39523728669 is a wasteful number, since it uses less digits than its factorization.

39523728669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142288.

The product of its digits is 29393280, while the sum is 60.

The spelling of 39523728669 in words is "thirty-nine billion, five hundred twenty-three million, seven hundred twenty-eight thousand, six hundred sixty-nine".