39487439 has 8 divisors (see below), whose sum is σ = 40407360. Its totient is φ = 38578176.

The previous prime is 39487433. The next prime is 39487451. The reversal of 39487439 is 93478493.

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

It is a cyclic number.

It is not a de Polignac number, because 39487439 - 2¹² = 39483343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39487393 and 39487402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39487433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5087 + ... + 10239.

It is an arithmetic number, because the mean of its divisors is an integer number (5050920).

Almost surely, 2^39487439 is an apocalyptic number.

39487439 is a deficient number, since it is larger than the sum of its proper divisors (919921).

39487439 is an equidigital number, since it uses as much as digits as its factorization.

39487439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5329.

The product of its digits is 653184, while the sum is 47.

The square root of 39487439 is about 6283.9031660267. The cubic root of 39487439 is about 340.5281267488.

The spelling of 39487439 in words is "thirty-nine million, four hundred eighty-seven thousand, four hundred thirty-nine".