39808342929 has 4 divisors (see below), whose sum is σ = 53077790576. Its totient is φ = 26538895284.

The previous prime is 39808342921. The next prime is 39808342939. The reversal of 39808342929 is 92924380893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92924380893 = 3 ⋅30974793631.

It is not a de Polignac number, because 39808342929 - 2³ = 39808342921 is a prime.

It is a super-3 number, since 3×39808342929³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39808342921) 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, 6634723819 + ... + 6634723824.

It is an arithmetic number, because the mean of its divisors is an integer number (13269447644).

Almost surely, 2^39808342929 is an apocalyptic number.

It is an amenable number.

39808342929 is a deficient number, since it is larger than the sum of its proper divisors (13269447647).

39808342929 is a wasteful number, since it uses less digits than its factorization.

39808342929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13269447646.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 39808342929 in words is "thirty-nine billion, eight hundred eight million, three hundred forty-two thousand, nine hundred twenty-nine".