3870839 has 8 divisors (see below), whose sum is σ = 4435968. Its totient is φ = 3308760.

The previous prime is 3870827. The next prime is 3870847. The reversal of 3870839 is 9380783.

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

It is not a de Polignac number, because 3870839 - 2²⁰ = 2822263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3794 + ... + 4704.

It is an arithmetic number, because the mean of its divisors is an integer number (554496).

Almost surely, 2^3870839 is an apocalyptic number.

3870839 is a deficient number, since it is larger than the sum of its proper divisors (565129).

3870839 is an equidigital number, since it uses as much as digits as its factorization.

3870839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 3870839 is about 1967.4447895684. Note that the first 3 decimals coincide. The cubic root of 3870839 is about 157.0127919040.

The spelling of 3870839 in words is "three million, eight hundred seventy thousand, eight hundred thirty-nine".