3994273 has 4 divisors (see below), whose sum is σ = 3998740. Its totient is φ = 3989808.

The previous prime is 3994271. The next prime is 3994279. The reversal of 3994273 is 3724993.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2122849 + 1871424 = 1457^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 3994273 - 2¹ = 3994271 is a prime.

It is a Duffinian number.

3994273 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3994271) 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, 378 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (999685).

Almost surely, 2^3994273 is an apocalyptic number.

It is an amenable number.

3994273 is a deficient number, since it is larger than the sum of its proper divisors (4467).

3994273 is a wasteful number, since it uses less digits than its factorization.

3994273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466.

The product of its digits is 40824, while the sum is 37.

The square root of 3994273 is about 1998.5677371558. The cubic root of 3994273 is about 158.6643102970.

The spelling of 3994273 in words is "three million, nine hundred ninety-four thousand, two hundred seventy-three".