3938420 has 24 divisors (see below), whose sum is σ = 8322048. Its totient is φ = 1565600.

The previous prime is 3938393. The next prime is 3938437. The reversal of 3938420 is 248393.

It is a super-2 number, since 2×3938420² = 31022304192800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3305 + ... + 4335.

It is an arithmetic number, because the mean of its divisors is an integer number (346752).

Almost surely, 2^3938420 is an apocalyptic number.

It is an amenable number.

3938420 is an abundant number, since it is smaller than the sum of its proper divisors (4383628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3938420 is a wasteful number, since it uses less digits than its factorization.

3938420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3938420 is about 1984.5452879690. The cubic root of 3938420 is about 157.9212875040.

The spelling of 3938420 in words is "three million, nine hundred thirty-eight thousand, four hundred twenty".