39628775 has 18 divisors (see below), whose sum is σ = 51873912. Its totient is φ = 30027600.

The previous prime is 39628769. The next prime is 39628777. The reversal of 39628775 is 57782693.

It is not a de Polignac number, because 39628775 - 2¹⁰ = 39627751 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39628777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6830 + ... + 11220.

It is an arithmetic number, because the mean of its divisors is an integer number (2881884).

Almost surely, 2^39628775 is an apocalyptic number.

39628775 is a deficient number, since it is larger than the sum of its proper divisors (12245137).

39628775 is a wasteful number, since it uses less digits than its factorization.

39628775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439 (or 4415 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 39628775 is about 6295.1389976711. The cubic root of 39628775 is about 340.9339230935.

The spelling of 39628775 in words is "thirty-nine million, six hundred twenty-eight thousand, seven hundred seventy-five".