4003394 has 4 divisors (see below), whose sum is σ = 6005094. Its totient is φ = 2001696.

The previous prime is 4003387. The next prime is 4003397. The reversal of 4003394 is 4933004.

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., 3948169 + 55225 = 1987^2 + 235^2 .

It is not an unprimeable number, because it can be changed into a prime (4003397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000847 + ... + 1000850.

Almost surely, 2^4003394 is an apocalyptic number.

4003394 is a deficient number, since it is larger than the sum of its proper divisors (2001700).

4003394 is a wasteful number, since it uses less digits than its factorization.

4003394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001699.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 4003394 is about 2000.8483200883. The cubic root of 4003394 is about 158.7849894975.

Adding to 4003394 its reverse (4933004), we get a palindrome (8936398).

The spelling of 4003394 in words is "four million, three thousand, three hundred ninety-four".