39456642 has 16 divisors (see below), whose sum is σ = 79000992. Its totient is φ = 13137600.

The previous prime is 39456631. The next prime is 39456647. The reversal of 39456642 is 24665493.

It is a self number, because there is not a number n which added to its sum of digits gives 39456642.

It is not an unprimeable number, because it can be changed into a prime (39456647) 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 7 ways as a sum of consecutive naturals, for example, 3178 + ... + 9434.

It is an arithmetic number, because the mean of its divisors is an integer number (4937562).

Almost surely, 2^39456642 is an apocalyptic number.

39456642 is an abundant number, since it is smaller than the sum of its proper divisors (39544350).

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

39456642 is a wasteful number, since it uses less digits than its factorization.

39456642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7313.

The product of its digits is 155520, while the sum is 39.

The square root of 39456642 is about 6281.4522206254. The cubic root of 39456642 is about 340.4395756165.

The spelling of 39456642 in words is "thirty-nine million, four hundred fifty-six thousand, six hundred forty-two".