3820139 has 12 divisors (see below), whose sum is σ = 4155984. Its totient is φ = 3502224.

The previous prime is 3820133. The next prime is 3820153. The reversal of 3820139 is 9310283.

It is not a de Polignac number, because 3820139 - 2²⁰ = 2771563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3820133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56984 + ... + 57050.

It is an arithmetic number, because the mean of its divisors is an integer number (346332).

Almost surely, 2^3820139 is an apocalyptic number.

3820139 is a deficient number, since it is larger than the sum of its proper divisors (335845).

3820139 is an equidigital number, since it uses as much as digits as its factorization.

3820139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3820139 is about 1954.5175875392. The cubic root of 3820139 is about 156.3242625122.

The spelling of 3820139 in words is "three million, eight hundred twenty thousand, one hundred thirty-nine".