3924478 has 4 divisors (see below), whose sum is σ = 5886720. Its totient is φ = 1962238.

The previous prime is 3924461. The next prime is 3924497. The reversal of 3924478 is 8744293.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8744293 = 239 ⋅36587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981118 + ... + 981121.

It is an arithmetic number, because the mean of its divisors is an integer number (1471680).

Almost surely, 2^3924478 is an apocalyptic number.

3924478 is a deficient number, since it is larger than the sum of its proper divisors (1962242).

3924478 is a wasteful number, since it uses less digits than its factorization.

3924478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962241.

The product of its digits is 48384, while the sum is 37.

The square root of 3924478 is about 1981.0295303200. The cubic root of 3924478 is about 157.7347201527.

The spelling of 3924478 in words is "three million, nine hundred twenty-four thousand, four hundred seventy-eight".