3889994 has 4 divisors (see below), whose sum is σ = 5834994. Its totient is φ = 1944996.

The previous prime is 3889993. The next prime is 3890011. The reversal of 3889994 is 4999883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2601769 + 1288225 = 1613^2 + 1135^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3889993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972497 + ... + 972500.

Almost surely, 2^3889994 is an apocalyptic number.

3889994 is a deficient number, since it is larger than the sum of its proper divisors (1945000).

3889994 is a wasteful number, since it uses less digits than its factorization.

3889994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944999.

The product of its digits is 559872, while the sum is 50.

The square root of 3889994 is about 1972.3067712706. The cubic root of 3889994 is about 157.2713605313.

The spelling of 3889994 in words is "three million, eight hundred eighty-nine thousand, nine hundred ninety-four".