39006779905 has 16 divisors (see below), whose sum is σ = 49723027200. Its totient is φ = 29274124032.

The previous prime is 39006779879. The next prime is 39006779921. The reversal of 39006779905 is 50997760093.

It is not a de Polignac number, because 39006779905 - 2⁹ = 39006779393 is a prime.

It is a super-2 number, since 2×39006779905² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721305 + ... + 773494.

It is an arithmetic number, because the mean of its divisors is an integer number (3107689200).

Almost surely, 2^39006779905 is an apocalyptic number.

It is an amenable number.

39006779905 is a deficient number, since it is larger than the sum of its proper divisors (10716247295).

39006779905 is a wasteful number, since it uses less digits than its factorization.

39006779905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495128.

The product of its (nonzero) digits is 3214890, while the sum is 55.

The spelling of 39006779905 in words is "thirty-nine billion, six million, seven hundred seventy-nine thousand, nine hundred five".