8278457444 has 6 divisors (see below), whose sum is σ = 14487300534. Its totient is φ = 4139228720.

The previous prime is 8278457423. The next prime is 8278457449. The reversal of 8278457444 is 4447548728.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4634886400 + 3643571044 = 68080^2 + 60362^2 .

It is not an unprimeable number, because it can be changed into a prime (8278457449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034807177 + ... + 1034807184.

It is an arithmetic number, because the mean of its divisors is an integer number (2414550089).

Almost surely, 2^8278457444 is an apocalyptic number.

It is an amenable number.

8278457444 is a deficient number, since it is larger than the sum of its proper divisors (6208843090).

8278457444 is a wasteful number, since it uses less digits than its factorization.

8278457444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069614365 (or 2069614363 counting only the distinct ones).

The product of its digits is 8028160, while the sum is 53.

The square root of 8278457444 is about 90986.0288395971. The cubic root of 8278457444 is about 2022.9406443317.

The spelling of 8278457444 in words is "eight billion, two hundred seventy-eight million, four hundred fifty-seven thousand, four hundred forty-four".