4394842 has 4 divisors (see below), whose sum is σ = 6592266. Its totient is φ = 2197420.

The previous prime is 4394837. The next prime is 4394843. The reversal of 4394842 is 2484934.

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., 3455881 + 938961 = 1859^2 + 969^2 .

It is a d-powerful number, because it can be written as 4⁷ + 3¹⁰ + 9⁵ + 4⁸ + 8 + 4¹¹ + 2⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 4394798 and 4394807.

It is not an unprimeable number, because it can be changed into a prime (4394843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098709 + ... + 1098712.

Almost surely, 2^4394842 is an apocalyptic number.

4394842 is a deficient number, since it is larger than the sum of its proper divisors (2197424).

4394842 is a wasteful number, since it uses less digits than its factorization.

4394842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197423.

The product of its digits is 27648, while the sum is 34.

The square root of 4394842 is about 2096.3878457957. The cubic root of 4394842 is about 163.8001978845.

The spelling of 4394842 in words is "four million, three hundred ninety-four thousand, eight hundred forty-two".