3938347 has 4 divisors (see below), whose sum is σ = 4500976. Its totient is φ = 3375720.

The previous prime is 3938329. The next prime is 3938351. The reversal of 3938347 is 7438393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7438393 = 2083 ⋅3571.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3938347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3938357) 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, 281304 + ... + 281317.

It is an arithmetic number, because the mean of its divisors is an integer number (1125244).

Almost surely, 2^3938347 is an apocalyptic number.

3938347 is a deficient number, since it is larger than the sum of its proper divisors (562629).

3938347 is an equidigital number, since it uses as much as digits as its factorization.

3938347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562628.

The product of its digits is 54432, while the sum is 37.

The square root of 3938347 is about 1984.5268957613. The cubic root of 3938347 is about 157.9203117891.

The spelling of 3938347 in words is "three million, nine hundred thirty-eight thousand, three hundred forty-seven".