39536421 has 16 divisors (see below), whose sum is σ = 53706240. Its totient is φ = 25865840.

The previous prime is 39536411. The next prime is 39536429. The reversal of 39536421 is 12463593.

39536421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 39536421 - 2¹⁹ = 39012133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39536429) 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 15 ways as a sum of consecutive naturals, for example, 89026 + ... + 89468.

It is an arithmetic number, because the mean of its divisors is an integer number (3356640).

Almost surely, 2^39536421 is an apocalyptic number.

It is an amenable number.

39536421 is a deficient number, since it is larger than the sum of its proper divisors (14169819).

39536421 is a wasteful number, since it uses less digits than its factorization.

39536421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its digits is 19440, while the sum is 33.

The square root of 39536421 is about 6287.7993765705. The cubic root of 39536421 is about 340.6688707179.

The spelling of 39536421 in words is "thirty-nine million, five hundred thirty-six thousand, four hundred twenty-one".