39039421 has 8 divisors (see below), whose sum is σ = 40557888. Its totient is φ = 37548000.

The previous prime is 39039409. The next prime is 39039467. The reversal of 39039421 is 12493093.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39039421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39039521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3795 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (5069736).

Almost surely, 2^39039421 is an apocalyptic number.

It is an amenable number.

39039421 is a deficient number, since it is larger than the sum of its proper divisors (1518467).

39039421 is a wasteful number, since it uses less digits than its factorization.

39039421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13523.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 39039421 is about 6248.1534072076. The cubic root of 39039421 is about 339.2353664629.

The spelling of 39039421 in words is "thirty-nine million, thirty-nine thousand, four hundred twenty-one".