39949180 has 12 divisors (see below), whose sum is σ = 83893320. Its totient is φ = 15979664.

The previous prime is 39949157. The next prime is 39949187. The reversal of 39949180 is 8194993.

39949180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39949187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998710 + ... + 998749.

It is an arithmetic number, because the mean of its divisors is an integer number (6991110).

Almost surely, 2^39949180 is an apocalyptic number.

It is an amenable number.

39949180 is an abundant number, since it is smaller than the sum of its proper divisors (43944140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39949180 is a wasteful number, since it uses less digits than its factorization.

39949180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997468 (or 1997466 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 39949180 is about 6320.5363696446. The cubic root of 39949180 is about 341.8502929917.

The spelling of 39949180 in words is "thirty-nine million, nine hundred forty-nine thousand, one hundred eighty".