39669572 has 12 divisors (see below), whose sum is σ = 72440256. Its totient is φ = 18972360.

The previous prime is 39669571. The next prime is 39669577. The reversal of 39669572 is 27596693.

39669572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (39669571) 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, 215504 + ... + 215687.

It is an arithmetic number, because the mean of its divisors is an integer number (6036688).

Almost surely, 2^39669572 is an apocalyptic number.

It is an amenable number.

39669572 is a deficient number, since it is larger than the sum of its proper divisors (32770684).

39669572 is a wasteful number, since it uses less digits than its factorization.

39669572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431218 (or 431216 counting only the distinct ones).

The product of its digits is 612360, while the sum is 47.

The square root of 39669572 is about 6298.3785214927. The cubic root of 39669572 is about 341.0508777639.

The spelling of 39669572 in words is "thirty-nine million, six hundred sixty-nine thousand, five hundred seventy-two".