8442394 has 4 divisors (see below), whose sum is σ = 12663594. Its totient is φ = 4221196.

The previous prime is 8442389. The next prime is 8442419. The reversal of 8442394 is 4932448.

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., 6786025 + 1656369 = 2605^2 + 1287^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110597 + ... + 2110600.

Almost surely, 2^8442394 is an apocalyptic number.

8442394 is a deficient number, since it is larger than the sum of its proper divisors (4221200).

8442394 is a wasteful number, since it uses less digits than its factorization.

8442394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221199.

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

The square root of 8442394 is about 2905.5798044452. The cubic root of 8442394 is about 203.6206747030.

It can be divided in two parts, 8442 and 394, that added together give a square (8836 = 94²).

The spelling of 8442394 in words is "eight million, four hundred forty-two thousand, three hundred ninety-four".