3842639 has 8 divisors (see below), whose sum is σ = 3932160. Its totient is φ = 3754296.

The previous prime is 3842627. The next prime is 3842669. The reversal of 3842639 is 9362483.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3842639 is a prime.

It is a d-powerful number, because it can be written as 3⁴ + 8⁷ + 4⁸ + 2 + 6⁸ + 3⁵ + 9 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3842599 and 3842608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3842669) 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, 9842 + ... + 10224.

It is an arithmetic number, because the mean of its divisors is an integer number (491520).

Almost surely, 2^3842639 is an apocalyptic number.

3842639 is a deficient number, since it is larger than the sum of its proper divisors (89521).

3842639 is a wasteful number, since it uses less digits than its factorization.

3842639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589.

The product of its digits is 31104, while the sum is 35.

The square root of 3842639 is about 1960.2650331014. The cubic root of 3842639 is about 156.6305701256.

The spelling of 3842639 in words is "three million, eight hundred forty-two thousand, six hundred thirty-nine".