39564742 has 16 divisors (see below), whose sum is σ = 70013952. Its totient is φ = 16409160.

The previous prime is 39564737. The next prime is 39564743. The reversal of 39564742 is 24746593.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39564695 and 39564704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39564743) 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, 45148 + ... + 46015.

It is an arithmetic number, because the mean of its divisors is an integer number (4375872).

Almost surely, 2^39564742 is an apocalyptic number.

39564742 is a deficient number, since it is larger than the sum of its proper divisors (30449210).

39564742 is a wasteful number, since it uses less digits than its factorization.

39564742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91203.

The product of its digits is 181440, while the sum is 40.

The square root of 39564742 is about 6290.0510331793. The cubic root of 39564742 is about 340.7501947227.

The spelling of 39564742 in words is "thirty-nine million, five hundred sixty-four thousand, seven hundred forty-two".