39399742 has 8 divisors (see below), whose sum is σ = 59268096. Its totient is φ = 19643712.

The previous prime is 39399733. The next prime is 39399743. The reversal of 39399742 is 24799393.

39399742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 39399692 and 39399701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39399743) 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, 27198 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (7408512).

Almost surely, 2^39399742 is an apocalyptic number.

39399742 is a deficient number, since it is larger than the sum of its proper divisors (19868354).

39399742 is a wasteful number, since it uses less digits than its factorization.

39399742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56162.

The product of its digits is 367416, while the sum is 46.

The square root of 39399742 is about 6276.9213791476. The cubic root of 39399742 is about 340.2758488022.

The spelling of 39399742 in words is "thirty-nine million, three hundred ninety-nine thousand, seven hundred forty-two".