8474278385 has 16 divisors (see below), whose sum is σ = 10388903184. Its totient is φ = 6633599232.

The previous prime is 8474278381. The next prime is 8474278409. The reversal of 8474278385 is 5838724748.

It can be written as a sum of positive squares in 8 ways, for example, as 553990369 + 7920288016 = 23537^2 + 88996^2 .

It is a cyclic number.

It is not a de Polignac number, because 8474278385 - 2² = 8474278381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8474278385.

It is not an unprimeable number, because it can be changed into a prime (8474278381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55979 + ... + 141711.

It is an arithmetic number, because the mean of its divisors is an integer number (649306449).

Almost surely, 2^8474278385 is an apocalyptic number.

It is an amenable number.

8474278385 is a deficient number, since it is larger than the sum of its proper divisors (1914624799).

8474278385 is a wasteful number, since it uses less digits than its factorization.

8474278385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86164.

The product of its digits is 12042240, while the sum is 56.

The square root of 8474278385 is about 92055.8438394869. The cubic root of 8474278385 is about 2038.7669070633.

The spelling of 8474278385 in words is "eight billion, four hundred seventy-four million, two hundred seventy-eight thousand, three hundred eighty-five".