3942389 has 8 divisors (see below), whose sum is σ = 4324800. Its totient is φ = 3564000.

The previous prime is 3942383. The next prime is 3942397. The reversal of 3942389 is 9832493.

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

It is not a de Polignac number, because 3942389 - 2⁴ = 3942373 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 (3942383) 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, 1289 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (540600).

Almost surely, 2^3942389 is an apocalyptic number.

It is an amenable number.

3942389 is a deficient number, since it is larger than the sum of its proper divisors (382411).

3942389 is a wasteful number, since it uses less digits than its factorization.

3942389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011.

The product of its digits is 46656, while the sum is 38.

The square root of 3942389 is about 1985.5450133402. The cubic root of 3942389 is about 157.9743188512.

The spelling of 3942389 in words is "three million, nine hundred forty-two thousand, three hundred eighty-nine".