38947982 has 8 divisors (see below), whose sum is σ = 59222496. Its totient is φ = 19207152.

The previous prime is 38947963. The next prime is 38948011. The reversal of 38947982 is 28974983.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 38947982.

It is a congruent number.

It is an unprimeable number.

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, 133238 + ... + 133529.

It is an arithmetic number, because the mean of its divisors is an integer number (7402812).

Almost surely, 2^38947982 is an apocalyptic number.

38947982 is a deficient number, since it is larger than the sum of its proper divisors (20274514).

38947982 is a wasteful number, since it uses less digits than its factorization.

38947982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266842.

The product of its digits is 870912, while the sum is 50.

The square root of 38947982 is about 6240.8318355809. The cubic root of 38947982 is about 338.9703045374.

The spelling of 38947982 in words is "thirty-eight million, nine hundred forty-seven thousand, nine hundred eighty-two".