39642938 has 8 divisors (see below), whose sum is σ = 62049888. Its totient is φ = 18959644.

The previous prime is 39642937. The next prime is 39642943. The reversal of 39642938 is 83924693.

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

It is not an unprimeable number, because it can be changed into a prime (39642937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430856 + ... + 430947.

It is an arithmetic number, because the mean of its divisors is an integer number (7756236).

Almost surely, 2^39642938 is an apocalyptic number.

39642938 is a deficient number, since it is larger than the sum of its proper divisors (22406950).

39642938 is a wasteful number, since it uses less digits than its factorization.

39642938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861828.

The product of its digits is 279936, while the sum is 44.

The square root of 39642938 is about 6296.2638127702. The cubic root of 39642938 is about 340.9745339209.

It can be divided in two parts, 396 and 42938, that added together give a palindrome (43334).

The spelling of 39642938 in words is "thirty-nine million, six hundred forty-two thousand, nine hundred thirty-eight".