3984427 has 4 divisors (see below), whose sum is σ = 3995320. Its totient is φ = 3973536.

The previous prime is 3984403. The next prime is 3984439. The reversal of 3984427 is 7244893.

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: 7244893 = 307 ⋅23599.

It is a cyclic number.

It is not a de Polignac number, because 3984427 - 2¹¹ = 3982379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3984457) 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, 4878 + ... + 5635.

It is an arithmetic number, because the mean of its divisors is an integer number (998830).

Almost surely, 2^3984427 is an apocalyptic number.

3984427 is a deficient number, since it is larger than the sum of its proper divisors (10893).

3984427 is a wasteful number, since it uses less digits than its factorization.

3984427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10892.

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

The square root of 3984427 is about 1996.1029532567. The cubic root of 3984427 is about 158.5338323026.

The spelling of 3984427 in words is "three million, nine hundred eighty-four thousand, four hundred twenty-seven".