39630545 has 4 divisors (see below), whose sum is σ = 47556660. Its totient is φ = 31704432.

The previous prime is 39630533. The next prime is 39630551. The reversal of 39630545 is 54503693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54503693 = 83 ⋅656671.

It can be written as a sum of positive squares in 2 ways, for example, as 23980609 + 15649936 = 4897^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 39630545 - 2⁸ = 39630289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3963050 + ... + 3963059.

It is an arithmetic number, because the mean of its divisors is an integer number (11889165).

Almost surely, 2^39630545 is an apocalyptic number.

It is an amenable number.

39630545 is a deficient number, since it is larger than the sum of its proper divisors (7926115).

39630545 is an equidigital number, since it uses as much as digits as its factorization.

39630545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926114.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 39630545 is about 6295.2795807653. The cubic root of 39630545 is about 340.9389989007.

The spelling of 39630545 in words is "thirty-nine million, six hundred thirty thousand, five hundred forty-five".