3938389 has 16 divisors (see below), whose sum is σ = 4902912. Its totient is φ = 3080448.

The previous prime is 3938383. The next prime is 3938393. The reversal of 3938389 is 9838393.

It is not a de Polignac number, because 3938389 - 2³ = 3938381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10092 + ... + 10474.

It is an arithmetic number, because the mean of its divisors is an integer number (306432).

Almost surely, 2^3938389 is an apocalyptic number.

It is an amenable number.

3938389 is a deficient number, since it is larger than the sum of its proper divisors (964523).

3938389 is a wasteful number, since it uses less digits than its factorization.

3938389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its digits is 139968, while the sum is 43.

The square root of 3938389 is about 1984.5374776003. The cubic root of 3938389 is about 157.9208731607.

The spelling of 3938389 in words is "three million, nine hundred thirty-eight thousand, three hundred eighty-nine".