39630505 has 8 divisors (see below), whose sum is σ = 47612232. Its totient is φ = 31667328.

The previous prime is 39630497. The next prime is 39630509. The reversal of 39630505 is 50503693.

It can be written as a sum of positive squares in 4 ways, for example, as 12880921 + 26749584 = 3589^2 + 5172^2 .

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 39630505 - 2³ = 39630497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39630509) 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, 607 + ... + 8923.

It is an arithmetic number, because the mean of its divisors is an integer number (5951529).

Almost surely, 2^39630505 is an apocalyptic number.

It is an amenable number.

39630505 is a deficient number, since it is larger than the sum of its proper divisors (7981727).

39630505 is an equidigital number, since it uses as much as digits as its factorization.

39630505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 39630505 is about 6295.2764037809. The cubic root of 39630505 is about 340.9388841948.

The spelling of 39630505 in words is "thirty-nine million, six hundred thirty thousand, five hundred five".