3994903 has 4 divisors (see below), whose sum is σ = 4358088. Its totient is φ = 3631720.

The previous prime is 3994897. The next prime is 3994909. The reversal of 3994903 is 3094993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3094993 = 11 ⋅281363.

It is an interprime number because it is at equal distance from previous prime (3994897) and next prime (3994909).

It is a cyclic number.

It is not a de Polignac number, because 3994903 - 2⁹ = 3994391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994909) 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, 181576 + ... + 181597.

It is an arithmetic number, because the mean of its divisors is an integer number (1089522).

Almost surely, 2^3994903 is an apocalyptic number.

3994903 is a deficient number, since it is larger than the sum of its proper divisors (363185).

3994903 is a wasteful number, since it uses less digits than its factorization.

3994903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363184.

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

The square root of 3994903 is about 1998.7253438129. The cubic root of 3994903 is about 158.6726516781.

The spelling of 3994903 in words is "three million, nine hundred ninety-four thousand, nine hundred three".