39021961 has 16 divisors (see below), whose sum is σ = 44945280. Its totient is φ = 33531520.

The previous prime is 39021959. The next prime is 39021973. The reversal of 39021961 is 16912093.

39021961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39021961 - 2¹ = 39021959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39021911) 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, 21651 + ... + 23383.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^39021961 is an apocalyptic number.

It is an amenable number.

39021961 is a deficient number, since it is larger than the sum of its proper divisors (5923319).

39021961 is a wasteful number, since it uses less digits than its factorization.

39021961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 39021961 is about 6246.7560381369. The cubic root of 39021961 is about 339.1847856860.

The spelling of 39021961 in words is "thirty-nine million, twenty-one thousand, nine hundred sixty-one".