39969242 has 8 divisors (see below), whose sum is σ = 60034932. Its totient is φ = 19957600.

The previous prime is 39969203. The next prime is 39969257. The reversal of 39969242 is 24296993.

39969242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22572001 + 17397241 = 4751^2 + 4171^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 39969193 and 39969202.

It is an unprimeable number.

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, 11609 + ... + 14652.

Almost surely, 2^39969242 is an apocalyptic number.

39969242 is a deficient number, since it is larger than the sum of its proper divisors (20065690).

39969242 is a wasteful number, since it uses less digits than its factorization.

39969242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27024.

The product of its digits is 209952, while the sum is 44.

The square root of 39969242 is about 6322.1232192990. The cubic root of 39969242 is about 341.9075077903.

The spelling of 39969242 in words is "thirty-nine million, nine hundred sixty-nine thousand, two hundred forty-two".