3834921 has 16 divisors (see below), whose sum is σ = 5287680. Its totient is φ = 2471040.

The previous prime is 3834913. The next prime is 3834937. The reversal of 3834921 is 1294383.

It is not a de Polignac number, because 3834921 - 2³ = 3834913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3834991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14016 + ... + 14286.

It is an arithmetic number, because the mean of its divisors is an integer number (330480).

Almost surely, 2^3834921 is an apocalyptic number.

It is an amenable number.

3834921 is a deficient number, since it is larger than the sum of its proper divisors (1452759).

3834921 is a wasteful number, since it uses less digits than its factorization.

3834921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its digits is 5184, while the sum is 30.

The square root of 3834921 is about 1958.2954322573. The cubic root of 3834921 is about 156.5256348635.

The spelling of 3834921 in words is "three million, eight hundred thirty-four thousand, nine hundred twenty-one".