3983918 has 4 divisors (see below), whose sum is σ = 5975880. Its totient is φ = 1991958.

The previous prime is 3983911. The next prime is 3983927. The reversal of 3983918 is 8193893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8193893 = 607 ⋅13499.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3983911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995978 + ... + 995981.

It is an arithmetic number, because the mean of its divisors is an integer number (1493970).

Almost surely, 2^3983918 is an apocalyptic number.

3983918 is a deficient number, since it is larger than the sum of its proper divisors (1991962).

3983918 is a wasteful number, since it uses less digits than its factorization.

3983918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991961.

The product of its digits is 46656, while the sum is 41.

The square root of 3983918 is about 1995.9754507508. The cubic root of 3983918 is about 158.5270812560.

The spelling of 3983918 in words is "three million, nine hundred eighty-three thousand, nine hundred eighteen".