39361921 has 8 divisors (see below), whose sum is σ = 40007520. Its totient is φ = 38721408.

The previous prime is 39361891. The next prime is 39361943. The reversal of 39361921 is 12916393.

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

It is a cyclic number.

It is not a de Polignac number, because 39361921 - 2⁷ = 39361793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39361951) 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, 16230 + ... + 18496.

It is an arithmetic number, because the mean of its divisors is an integer number (5000940).

Almost surely, 2^39361921 is an apocalyptic number.

It is an amenable number.

39361921 is a deficient number, since it is larger than the sum of its proper divisors (645599).

39361921 is a wasteful number, since it uses less digits than its factorization.

39361921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543.

The product of its digits is 8748, while the sum is 34.

The square root of 39361921 is about 6273.9079527835. The cubic root of 39361921 is about 340.1669335963.

The spelling of 39361921 in words is "thirty-nine million, three hundred sixty-one thousand, nine hundred twenty-one".