39120889 has 4 divisors (see below), whose sum is σ = 39150756. Its totient is φ = 39091024.

The previous prime is 39120883. The next prime is 39120899. The reversal of 39120889 is 98802193.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32319225 + 6801664 = 5685^2 + 2608^2 .

It is a cyclic number.

It is not a de Polignac number, because 39120889 - 2³ = 39120881 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39120881) 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 3 ways as a sum of consecutive naturals, for example, 12874 + ... + 15619.

It is an arithmetic number, because the mean of its divisors is an integer number (9787689).

Almost surely, 2^39120889 is an apocalyptic number.

It is an amenable number.

39120889 is a deficient number, since it is larger than the sum of its proper divisors (29867).

39120889 is a wasteful number, since it uses less digits than its factorization.

39120889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29866.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 39120889 is about 6254.6693757544. The cubic root of 39120889 is about 339.4711761827.

The spelling of 39120889 in words is "thirty-nine million, one hundred twenty thousand, eight hundred eighty-nine".