3820039 has 4 divisors (see below), whose sum is σ = 3841560. Its totient is φ = 3798520.

The previous prime is 3820031. The next prime is 3820043. The reversal of 3820039 is 9300283.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9300283 = 37 ⋅251359.

It is a cyclic number.

It is not a de Polignac number, because 3820039 - 2³ = 3820031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3819995 and 3820022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820031) 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, 10492 + ... + 10849.

It is an arithmetic number, because the mean of its divisors is an integer number (960390).

Almost surely, 2^3820039 is an apocalyptic number.

3820039 is a deficient number, since it is larger than the sum of its proper divisors (21521).

3820039 is a wasteful number, since it uses less digits than its factorization.

3820039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21520.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3820039 is about 1954.4920056117. The cubic root of 3820039 is about 156.3228984639.

The spelling of 3820039 in words is "three million, eight hundred twenty thousand, thirty-nine".