3870829 has 8 divisors (see below), whose sum is σ = 4001400. Its totient is φ = 3741696.

The previous prime is 3870827. The next prime is 3870847. The reversal of 3870829 is 9280783.

3870829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 946729 + 2924100 = 973^2 + 1710^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3870829 - 2¹ = 3870827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

3870829 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8397 + ... + 8845.

It is an arithmetic number, because the mean of its divisors is an integer number (500175).

Almost surely, 2^3870829 is an apocalyptic number.

It is an amenable number.

3870829 is a deficient number, since it is larger than the sum of its proper divisors (130571).

3870829 is a wasteful number, since it uses less digits than its factorization.

3870829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3870829 is about 1967.4422481994. The cubic root of 3870829 is about 157.0126566940.

The spelling of 3870829 in words is "three million, eight hundred seventy thousand, eight hundred twenty-nine".