4209394 has 12 divisors (see below), whose sum is σ = 7345134. Its totient is φ = 1803984.

The previous prime is 4209389. The next prime is 4209407. The reversal of 4209394 is 4939024.

It can be written as a sum of positive squares in only one way, i.e., 4149369 + 60025 = 2037^2 + 245^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21379 + ... + 21574.

Almost surely, 2^4209394 is an apocalyptic number.

4209394 is a deficient number, since it is larger than the sum of its proper divisors (3135740).

4209394 is a wasteful number, since it uses less digits than its factorization.

4209394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42969 (or 42962 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4209394 is about 2051.6807743896. The cubic root of 4209394 is about 161.4630650999.

The spelling of 4209394 in words is "four million, two hundred nine thousand, three hundred ninety-four".