39976705 has 4 divisors (see below), whose sum is σ = 47972052. Its totient is φ = 31981360.

The previous prime is 39976663. The next prime is 39976711. The reversal of 39976705 is 50767993.

39976705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7246864 + 32729841 = 2692^2 + 5721^2 .

It is a de Polignac number, because none of the positive numbers 2^k-39976705 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3997666 + ... + 3997675.

It is an arithmetic number, because the mean of its divisors is an integer number (11993013).

Almost surely, 2^39976705 is an apocalyptic number.

It is an amenable number.

39976705 is a deficient number, since it is larger than the sum of its proper divisors (7995347).

39976705 is an equidigital number, since it uses as much as digits as its factorization.

39976705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7995346.

The product of its (nonzero) digits is 357210, while the sum is 46.

The square root of 39976705 is about 6322.7134206763. The cubic root of 39976705 is about 341.9287866271.

The spelling of 39976705 in words is "thirty-nine million, nine hundred seventy-six thousand, seven hundred five".