3864829 has 2 divisors, whose sum is σ = 3864830. Its totient is φ = 3864828.

The previous prime is 3864827. The next prime is 3864841. The reversal of 3864829 is 9284683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3232804 + 632025 = 1798^2 + 795^2 .

It is an emirp because it is prime and its reverse (9284683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3864829 - 2¹ = 3864827 is a prime.

Together with 3864827, it forms a pair of twin primes.

3864829 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3864791 and 3864800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3864821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932414 + 1932415.

It is an arithmetic number, because the mean of its divisors is an integer number (1932415).

Almost surely, 2^3864829 is an apocalyptic number.

It is an amenable number.

3864829 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864829 is an equidigital number, since it uses as much as digits as its factorization.

3864829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 3864829 is about 1965.9168344566. The cubic root of 3864829 is about 156.9314886275.

The spelling of 3864829 in words is "three million, eight hundred sixty-four thousand, eight hundred twenty-nine".