39768505 has 16 divisors (see below), whose sum is σ = 56300544. Its totient is φ = 26389440.

The previous prime is 39768499. The next prime is 39768517. The reversal of 39768505 is 50586793.

It is not a de Polignac number, because 39768505 - 2¹¹ = 39766457 is a prime.

It is a Duffinian number.

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, 17242 + ... + 19411.

It is an arithmetic number, because the mean of its divisors is an integer number (3518784).

Almost surely, 2^39768505 is an apocalyptic number.

39768505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39768505 is a deficient number, since it is larger than the sum of its proper divisors (16532039).

39768505 is a wasteful number, since it uses less digits than its factorization.

39768505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36696.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 39768505 is about 6306.2274776605. The cubic root of 39768505 is about 341.3341610147.

The spelling of 39768505 in words is "thirty-nine million, seven hundred sixty-eight thousand, five hundred five".