39128961 has 8 divisors (see below), whose sum is σ = 54917920. Its totient is φ = 24712992.

The previous prime is 39128933. The next prime is 39128963. The reversal of 39128961 is 16982193.

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

It is not a de Polignac number, because 39128961 - 2⁹ = 39128449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39128963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343180 + ... + 343293.

It is an arithmetic number, because the mean of its divisors is an integer number (6864740).

Almost surely, 2^39128961 is an apocalyptic number.

It is an amenable number.

39128961 is a deficient number, since it is larger than the sum of its proper divisors (15788959).

39128961 is a wasteful number, since it uses less digits than its factorization.

39128961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686495.

The product of its digits is 23328, while the sum is 39.

The square root of 39128961 is about 6255.3146203848. The cubic root of 39128961 is about 339.4945228138.

The spelling of 39128961 in words is "thirty-nine million, one hundred twenty-eight thousand, nine hundred sixty-one".