3832921 has 2 divisors, whose sum is σ = 3832922. Its totient is φ = 3832920.

The previous prime is 3832919. The next prime is 3832931. The reversal of 3832921 is 1292383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3459600 + 373321 = 1860^2 + 611^2 .

It is an emirp because it is prime and its reverse (1292383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3832921 - 2¹ = 3832919 is a prime.

Together with 3832919, it forms a pair of twin primes.

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

It is equal to p₂₇₂₁₈₈ and since 3832921 and 272188 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3832921.

It is not a weakly prime, because it can be changed into another prime (3832931) 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 as a sum of consecutive naturals, namely, 1916460 + 1916461.

It is an arithmetic number, because the mean of its divisors is an integer number (1916461).

Almost surely, 2^3832921 is an apocalyptic number.

It is an amenable number.

3832921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3832921 is an equidigital number, since it uses as much as digits as its factorization.

3832921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 3832921 is about 1957.7847174804. The cubic root of 3832921 is about 156.4984195521.

It can be divided in two parts, 3832 and 921, that added together give a triangular number (4753 = T₉₇).

The spelling of 3832921 in words is "three million, eight hundred thirty-two thousand, nine hundred twenty-one".