3938847 has 8 divisors (see below), whose sum is σ = 5729280. Its totient is φ = 2387160.

The previous prime is 3938839. The next prime is 3938897. The reversal of 3938847 is 7488393.

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

It is not a de Polignac number, because 3938847 - 2³ = 3938839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3938799 and 3938808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938827) 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, 59647 + ... + 59712.

It is an arithmetic number, because the mean of its divisors is an integer number (716160).

Almost surely, 2^3938847 is an apocalyptic number.

3938847 is a deficient number, since it is larger than the sum of its proper divisors (1790433).

3938847 is a wasteful number, since it uses less digits than its factorization.

3938847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119373.

The product of its digits is 145152, while the sum is 42.

The square root of 3938847 is about 1984.6528663724. The cubic root of 3938847 is about 157.9269945263.

The spelling of 3938847 in words is "three million, nine hundred thirty-eight thousand, eight hundred forty-seven".