39666747 has 8 divisors (see below), whose sum is σ = 53678656. Its totient is φ = 26049672.

The previous prime is 39666733. The next prime is 39666749. The reversal of 39666747 is 74766693.

39666747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39666747 - 2¹⁰ = 39665723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39666696 and 39666705.

It is not an unprimeable number, because it can be changed into a prime (39666749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 98473 + ... + 98874.

It is an arithmetic number, because the mean of its divisors is an integer number (6709832).

Almost surely, 2^39666747 is an apocalyptic number.

39666747 is a deficient number, since it is larger than the sum of its proper divisors (14011909).

39666747 is a wasteful number, since it uses less digits than its factorization.

39666747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197417.

The product of its digits is 1143072, while the sum is 48.

The square root of 39666747 is about 6298.1542534301. The cubic root of 39666747 is about 341.0427817888.

The spelling of 39666747 in words is "thirty-nine million, six hundred sixty-six thousand, seven hundred forty-seven".