39479447 has 6 divisors (see below), whose sum is σ = 45925128. Its totient is φ = 33839484.

The previous prime is 39479441. The next prime is 39479459. The reversal of 39479447 is 74497493.

39479447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39479447 - 2¹⁰ = 39478423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39479441) 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 5 ways as a sum of consecutive naturals, for example, 402803 + ... + 402900.

It is an arithmetic number, because the mean of its divisors is an integer number (7654188).

Almost surely, 2^39479447 is an apocalyptic number.

39479447 is a deficient number, since it is larger than the sum of its proper divisors (6445681).

39479447 is an equidigital number, since it uses as much as digits as its factorization.

39479447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805717 (or 805710 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 39479447 is about 6283.2672233481. The cubic root of 39479447 is about 340.5051516417.

The spelling of 39479447 in words is "thirty-nine million, four hundred seventy-nine thousand, four hundred forty-seven".