3994263 has 24 divisors (see below), whose sum is σ = 7102368. Its totient is φ = 2106432.

The previous prime is 3994253. The next prime is 3994267. The reversal of 3994263 is 3624993.

It is a happy number.

3994263 is a `hidden beast` number, since 399 + 4 + 263 = 666.

It is not a de Polignac number, because 3994263 - 2⁸ = 3994007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1620 + ... + 3257.

It is an arithmetic number, because the mean of its divisors is an integer number (295932).

Almost surely, 2^3994263 is an apocalyptic number.

3994263 is a deficient number, since it is larger than the sum of its proper divisors (3108105).

3994263 is a wasteful number, since it uses less digits than its factorization.

3994263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903 (or 4900 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3994263 is about 1998.5652353626. The cubic root of 3994263 is about 158.6641778870.

The spelling of 3994263 in words is "three million, nine hundred ninety-four thousand, two hundred sixty-three".