8439442 has 8 divisors (see below), whose sum is σ = 13810032. Its totient is φ = 3836100.

The previous prime is 8439437. The next prime is 8439443. The reversal of 8439442 is 2449348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 8439398 and 8439407.

It is not an unprimeable number, because it can be changed into a prime (8439443) 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, 191784 + ... + 191827.

It is an arithmetic number, because the mean of its divisors is an integer number (1726254).

Almost surely, 2^8439442 is an apocalyptic number.

8439442 is a deficient number, since it is larger than the sum of its proper divisors (5370590).

8439442 is a wasteful number, since it uses less digits than its factorization.

8439442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383624.

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

The square root of 8439442 is about 2905.0717719189. The cubic root of 8439442 is about 203.5969390065.

The spelling of 8439442 in words is "eight million, four hundred thirty-nine thousand, four hundred forty-two".