39520189 has 8 divisors (see below), whose sum is σ = 42261048. Its totient is φ = 36825600.

The previous prime is 39520163. The next prime is 39520193. The reversal of 39520189 is 98102593.

It can be written as a sum of positive squares in 4 ways, for example, as 22231225 + 17288964 = 4715^2 + 4158^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39520189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39520109) 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, 9792 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (5282631).

Almost surely, 2^39520189 is an apocalyptic number.

It is an amenable number.

39520189 is a deficient number, since it is larger than the sum of its proper divisors (2740859).

39520189 is a wasteful number, since it uses less digits than its factorization.

39520189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23135.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 39520189 is about 6286.5084904102. The cubic root of 39520189 is about 340.6222428753.

The spelling of 39520189 in words is "thirty-nine million, five hundred twenty thousand, one hundred eighty-nine".