39961189 has 6 divisors (see below), whose sum is σ = 41774726. Its totient is φ = 38223240.

The previous prime is 39961171. The next prime is 39961193. The reversal of 39961189 is 98116993.

It can be written as a sum of positive squares in only one way, i.e., 34128964 + 5832225 = 5842^2 + 2415^2 .

It is not a de Polignac number, because 39961189 - 2¹¹ = 39959141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39961109) 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 5 ways as a sum of consecutive naturals, for example, 37242 + ... + 38299.

Almost surely, 2^39961189 is an apocalyptic number.

It is an amenable number.

39961189 is a deficient number, since it is larger than the sum of its proper divisors (1813537).

39961189 is an equidigital number, since it uses as much as digits as its factorization.

39961189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75587 (or 75564 counting only the distinct ones).

The product of its digits is 104976, while the sum is 46.

The square root of 39961189 is about 6321.4862967502. The cubic root of 39961189 is about 341.8845437480.

The spelling of 39961189 in words is "thirty-nine million, nine hundred sixty-one thousand, one hundred eighty-nine".