39421744 has 20 divisors (see below), whose sum is σ = 76684824. Its totient is φ = 19632128.

The previous prime is 39421741. The next prime is 39421757. The reversal of 39421744 is 44712493.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (39421741) 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 3 ways as a sum of consecutive naturals, for example, 682 + ... + 8905.

Almost surely, 2^39421744 is an apocalyptic number.

It is an amenable number.

39421744 is a deficient number, since it is larger than the sum of its proper divisors (37263080).

39421744 is a wasteful number, since it uses less digits than its factorization.

39421744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9852 (or 9846 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 39421744 is about 6278.6737453064. The cubic root of 39421744 is about 340.3391771022.

The spelling of 39421744 in words is "thirty-nine million, four hundred twenty-one thousand, seven hundred forty-four".