3869842 has 8 divisors (see below), whose sum is σ = 6057216. Its totient is φ = 1850772.

The previous prime is 3869807. The next prime is 3869849. The reversal of 3869842 is 2489683.

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

It is a d-powerful number, because it can be written as 3¹⁰ + 8³ + 6⁸ + 9³ + 8⁵ + 4² + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 3869795 and 3869804.

It is not an unprimeable number, because it can be changed into a prime (3869849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42018 + ... + 42109.

It is an arithmetic number, because the mean of its divisors is an integer number (757152).

Almost surely, 2^3869842 is an apocalyptic number.

3869842 is a deficient number, since it is larger than the sum of its proper divisors (2187374).

3869842 is a wasteful number, since it uses less digits than its factorization.

3869842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84152.

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

The square root of 3869842 is about 1967.1913989239. The cubic root of 3869842 is about 156.9993103138. Note that the first 3 decimals are identical.

The spelling of 3869842 in words is "three million, eight hundred sixty-nine thousand, eight hundred forty-two".