3903994 has 4 divisors (see below), whose sum is σ = 5855994. Its totient is φ = 1951996.

The previous prime is 3903973. The next prime is 3904001. The reversal of 3903994 is 4993093.

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., 3853369 + 50625 = 1963^2 + 225^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975997 + ... + 976000.

Almost surely, 2^3903994 is an apocalyptic number.

3903994 is a deficient number, since it is larger than the sum of its proper divisors (1952000).

3903994 is a wasteful number, since it uses less digits than its factorization.

3903994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951999.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 3903994 is about 1975.8527273054. The cubic root of 3903994 is about 157.4598066581.

The spelling of 3903994 in words is "three million, nine hundred three thousand, nine hundred ninety-four".