8281474394 has 4 divisors (see below), whose sum is σ = 12422211594. Its totient is φ = 4140737196.

The previous prime is 8281474393. The next prime is 8281474417. The reversal of 8281474394 is 4934741828.

It is a happy number.

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., 7878870169 + 402604225 = 88763^2 + 20065^2 .

It is not an unprimeable number, because it can be changed into a prime (8281474391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070368597 + ... + 2070368600.

Almost surely, 2^8281474394 is an apocalyptic number.

8281474394 is a deficient number, since it is larger than the sum of its proper divisors (4140737200).

8281474394 is a wasteful number, since it uses less digits than its factorization.

8281474394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140737199.

The product of its digits is 1548288, while the sum is 50.

The square root of 8281474394 is about 91002.6065231101. The cubic root of 8281474394 is about 2023.1863571582.

The spelling of 8281474394 in words is "eight billion, two hundred eighty-one million, four hundred seventy-four thousand, three hundred ninety-four".