3928486 has 4 divisors (see below), whose sum is σ = 5892732. Its totient is φ = 1964242.

The previous prime is 3928453. The next prime is 3928487. The reversal of 3928486 is 6848293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6848293 = 37 ⋅185089.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982120 + ... + 982123.

It is an arithmetic number, because the mean of its divisors is an integer number (1473183).

Almost surely, 2^3928486 is an apocalyptic number.

3928486 is a deficient number, since it is larger than the sum of its proper divisors (1964246).

3928486 is a wasteful number, since it uses less digits than its factorization.

3928486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964245.

The product of its digits is 82944, while the sum is 40.

The square root of 3928486 is about 1982.0408673890. The cubic root of 3928486 is about 157.7883991101.

The spelling of 3928486 in words is "three million, nine hundred twenty-eight thousand, four hundred eighty-six".