39545545 has 8 divisors (see below), whose sum is σ = 51105096. Its totient is φ = 29202816.

The previous prime is 39545537. The next prime is 39545549. The reversal of 39545545 is 54554593.

It can be written as a sum of positive squares in 4 ways, for example, as 2930944 + 36614601 = 1712^2 + 6051^2 .

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 39545545 - 2³ = 39545537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39545498 and 39545507.

It is not an unprimeable number, because it can be changed into a prime (39545549) 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, 304132 + ... + 304261.

It is an arithmetic number, because the mean of its divisors is an integer number (6388137).

Almost surely, 2^39545545 is an apocalyptic number.

It is an amenable number.

39545545 is a deficient number, since it is larger than the sum of its proper divisors (11559551).

39545545 is a wasteful number, since it uses less digits than its factorization.

39545545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608411.

The product of its digits is 270000, while the sum is 40.

The square root of 39545545 is about 6288.5248667712. The cubic root of 39545545 is about 340.6950746047.

The spelling of 39545545 in words is "thirty-nine million, five hundred forty-five thousand, five hundred forty-five".